diff --git a/src/Orchard.Web/Core/Orchard.Core.csproj b/src/Orchard.Web/Core/Orchard.Core.csproj
index 811646f4c..8a00dd9a2 100644
--- a/src/Orchard.Web/Core/Orchard.Core.csproj
+++ b/src/Orchard.Web/Core/Orchard.Core.csproj
@@ -48,21 +48,12 @@
     <Reference Include="System.ComponentModel.DataAnnotations">
       <RequiredTargetFramework>3.5</RequiredTargetFramework>
     </Reference>
-    <Reference Include="System.Data" />
-    <Reference Include="System.Data.DataSetExtensions" />
-    <Reference Include="System.Web.ApplicationServices" />
-    <Reference Include="System.Web.DynamicData" />
-    <Reference Include="System.Web.Entity" />
-    <Reference Include="System.Web.Extensions" />
     <Reference Include="System.Web" />
-    <Reference Include="System.Web.Abstractions" />
     <Reference Include="System.Web.Mvc, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\..\..\lib\aspnetmvc\System.Web.Mvc.dll</HintPath>
     </Reference>
-    <Reference Include="System.Web.Routing" />
     <Reference Include="System.Xml" />
-    <Reference Include="System.Configuration" />
     <Reference Include="System.Xml.Linq" />
   </ItemGroup>
   <ItemGroup>
diff --git a/src/Orchard.Web/Modules/Lucene/Lucene.csproj b/src/Orchard.Web/Modules/Lucene/Lucene.csproj
index 51d46bd9f..7757eb0a2 100644
--- a/src/Orchard.Web/Modules/Lucene/Lucene.csproj
+++ b/src/Orchard.Web/Modules/Lucene/Lucene.csproj
@@ -38,20 +38,9 @@
     </Reference>
     <Reference Include="Microsoft.CSharp" />
     <Reference Include="System" />
-    <Reference Include="System.Data" />
-    <Reference Include="System.Drawing" />
-    <Reference Include="System.Web.DynamicData" />
-    <Reference Include="System.Web.Entity" />
-    <Reference Include="System.Web.ApplicationServices" />
-    <Reference Include="System.ComponentModel.DataAnnotations">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
     <Reference Include="System.Core">
       <RequiredTargetFramework>3.5</RequiredTargetFramework>
     </Reference>
-    <Reference Include="System.Data.DataSetExtensions">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
     <Reference Include="System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\..\..\..\lib\aspnetmvc\System.Web.Mvc.dll</HintPath>
@@ -60,15 +49,7 @@
       <RequiredTargetFramework>3.5</RequiredTargetFramework>
     </Reference>
     <Reference Include="System.Web" />
-    <Reference Include="System.Web.Extensions">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
-    <Reference Include="System.Web.Abstractions" />
-    <Reference Include="System.Web.Routing" />
     <Reference Include="System.Xml" />
-    <Reference Include="System.Configuration" />
-    <Reference Include="System.Web.Services" />
-    <Reference Include="System.EnterpriseServices" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Models\LuceneDocumentIndex.cs" />
diff --git a/src/Orchard.Web/Modules/Orchard.ArchiveLater/Orchard.ArchiveLater.csproj b/src/Orchard.Web/Modules/Orchard.ArchiveLater/Orchard.ArchiveLater.csproj
index d63ddfbbf..1deadbe41 100644
--- a/src/Orchard.Web/Modules/Orchard.ArchiveLater/Orchard.ArchiveLater.csproj
+++ b/src/Orchard.Web/Modules/Orchard.ArchiveLater/Orchard.ArchiveLater.csproj
@@ -35,37 +35,14 @@
   <ItemGroup>
     <Reference Include="Microsoft.CSharp" />
     <Reference Include="System" />
-    <Reference Include="System.Data" />
-    <Reference Include="System.Drawing" />
-    <Reference Include="System.Web.DynamicData" />
-    <Reference Include="System.Web.Entity" />
-    <Reference Include="System.Web.ApplicationServices" />
-    <Reference Include="System.ComponentModel.DataAnnotations">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
     <Reference Include="System.Core">
       <RequiredTargetFramework>3.5</RequiredTargetFramework>
     </Reference>
-    <Reference Include="System.Data.DataSetExtensions">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
     <Reference Include="System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\..\..\..\lib\aspnetmvc\System.Web.Mvc.dll</HintPath>
     </Reference>
-    <Reference Include="System.Xml.Linq">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
     <Reference Include="System.Web" />
-    <Reference Include="System.Web.Extensions">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
-    <Reference Include="System.Web.Abstractions" />
-    <Reference Include="System.Web.Routing" />
-    <Reference Include="System.Xml" />
-    <Reference Include="System.Configuration" />
-    <Reference Include="System.Web.Services" />
-    <Reference Include="System.EnterpriseServices" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Migrations.cs" />
diff --git a/src/Orchard.Web/Modules/Orchard.Blogs/Migrations.cs b/src/Orchard.Web/Modules/Orchard.Blogs/Migrations.cs
index 47605d5ba..2b5151bb9 100644
--- a/src/Orchard.Web/Modules/Orchard.Blogs/Migrations.cs
+++ b/src/Orchard.Web/Modules/Orchard.Blogs/Migrations.cs
@@ -1,5 +1,4 @@
-using System.Data;
-using Orchard.ContentManagement.MetaData;
+using Orchard.ContentManagement.MetaData;
 using Orchard.Data.Migration;
 
 namespace Orchard.Blogs {
diff --git a/src/Orchard.Web/Modules/Orchard.Blogs/Orchard.Blogs.csproj b/src/Orchard.Web/Modules/Orchard.Blogs/Orchard.Blogs.csproj
index 352e3d191..3d54c47dd 100644
--- a/src/Orchard.Web/Modules/Orchard.Blogs/Orchard.Blogs.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Blogs/Orchard.Blogs.csproj
@@ -41,28 +41,15 @@
   <ItemGroup>
     <Reference Include="Microsoft.CSharp" />
     <Reference Include="System" />
-    <Reference Include="System.Data" />
     <Reference Include="System.ComponentModel.DataAnnotations">
       <RequiredTargetFramework>3.5</RequiredTargetFramework>
     </Reference>
-    <Reference Include="System.Data.DataSetExtensions" />
-    <Reference Include="System.Web.ApplicationServices" />
-    <Reference Include="System.Web.DynamicData" />
-    <Reference Include="System.Web.Entity" />
-    <Reference Include="System.Web.Extensions" />
-    <Reference Include="System.Drawing" />
     <Reference Include="System.Web" />
-    <Reference Include="System.Web.Abstractions" />
     <Reference Include="System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\..\..\..\lib\aspnetmvc\System.Web.Mvc.dll</HintPath>
     </Reference>
-    <Reference Include="System.Web.Routing" />
     <Reference Include="System.Xml" />
-    <Reference Include="System.Configuration" />
-    <Reference Include="System.Web.Services" />
-    <Reference Include="System.EnterpriseServices" />
-    <Reference Include="System.Web.Mobile" />
     <Reference Include="System.Xml.Linq" />
   </ItemGroup>
   <ItemGroup>
diff --git a/src/Orchard.Web/Modules/Orchard.CodeGeneration/Orchard.CodeGeneration.csproj b/src/Orchard.Web/Modules/Orchard.CodeGeneration/Orchard.CodeGeneration.csproj
index c1705330a..130327539 100644
--- a/src/Orchard.Web/Modules/Orchard.CodeGeneration/Orchard.CodeGeneration.csproj
+++ b/src/Orchard.Web/Modules/Orchard.CodeGeneration/Orchard.CodeGeneration.csproj
@@ -39,36 +39,14 @@
     <Reference Include="Microsoft.CSharp" />
     <Reference Include="System" />
     <Reference Include="System.Data" />
-    <Reference Include="System.Drawing" />
-    <Reference Include="System.Web.DynamicData" />
-    <Reference Include="System.Web.Entity" />
-    <Reference Include="System.Web.ApplicationServices" />
-    <Reference Include="System.ComponentModel.DataAnnotations">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
     <Reference Include="System.Core">
       <RequiredTargetFramework>3.5</RequiredTargetFramework>
     </Reference>
-    <Reference Include="System.Data.DataSetExtensions">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
     <Reference Include="System.Web.Mvc, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\..\..\..\lib\aspnetmvc\System.Web.Mvc.dll</HintPath>
     </Reference>
-    <Reference Include="System.Xml.Linq">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
     <Reference Include="System.Web" />
-    <Reference Include="System.Web.Extensions">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
-    <Reference Include="System.Web.Abstractions" />
-    <Reference Include="System.Web.Routing" />
-    <Reference Include="System.Xml" />
-    <Reference Include="System.Configuration" />
-    <Reference Include="System.Web.Services" />
-    <Reference Include="System.EnterpriseServices" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Commands\CodeGenerationCommands.cs" />
diff --git a/src/Orchard.Web/Modules/Orchard.Comments/Orchard.Comments.csproj b/src/Orchard.Web/Modules/Orchard.Comments/Orchard.Comments.csproj
index 9a1af481e..41e2171f9 100644
--- a/src/Orchard.Web/Modules/Orchard.Comments/Orchard.Comments.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Comments/Orchard.Comments.csproj
@@ -45,28 +45,15 @@
     </Reference>
     <Reference Include="Microsoft.CSharp" />
     <Reference Include="System" />
-    <Reference Include="System.Data" />
     <Reference Include="System.ComponentModel.DataAnnotations">
       <RequiredTargetFramework>3.5</RequiredTargetFramework>
     </Reference>
-    <Reference Include="System.Data.DataSetExtensions" />
-    <Reference Include="System.Web.ApplicationServices" />
-    <Reference Include="System.Web.DynamicData" />
-    <Reference Include="System.Web.Entity" />
-    <Reference Include="System.Web.Extensions" />
-    <Reference Include="System.Drawing" />
     <Reference Include="System.Web" />
-    <Reference Include="System.Web.Abstractions" />
     <Reference Include="System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\..\..\..\lib\aspnetmvc\System.Web.Mvc.dll</HintPath>
     </Reference>
-    <Reference Include="System.Web.Routing" />
     <Reference Include="System.Xml" />
-    <Reference Include="System.Configuration" />
-    <Reference Include="System.Web.Services" />
-    <Reference Include="System.EnterpriseServices" />
-    <Reference Include="System.Web.Mobile" />
     <Reference Include="System.Xml.Linq" />
   </ItemGroup>
   <ItemGroup>
diff --git a/src/Orchard.Web/Modules/Orchard.ContentTypes/Orchard.ContentTypes.csproj b/src/Orchard.Web/Modules/Orchard.ContentTypes/Orchard.ContentTypes.csproj
index 0dfae91f7..154f3d001 100644
--- a/src/Orchard.Web/Modules/Orchard.ContentTypes/Orchard.ContentTypes.csproj
+++ b/src/Orchard.Web/Modules/Orchard.ContentTypes/Orchard.ContentTypes.csproj
@@ -35,38 +35,14 @@
   <ItemGroup>
     <Reference Include="Microsoft.CSharp" />
     <Reference Include="System" />
-    <Reference Include="System.Data" />
-    <Reference Include="System.Drawing" />
-    <Reference Include="System.Web.DynamicData" />
-    <Reference Include="System.Web.Entity" />
-    <Reference Include="System.Web.ApplicationServices" />
-    <Reference Include="System.ComponentModel.DataAnnotations">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
     <Reference Include="System.Core">
       <RequiredTargetFramework>3.5</RequiredTargetFramework>
     </Reference>
-    <Reference Include="System.Data.DataSetExtensions">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
     <Reference Include="System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\..\..\..\lib\aspnetmvc\System.Web.Mvc.dll</HintPath>
     </Reference>
-    <Reference Include="System.Xml.Linq">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
     <Reference Include="System.Web" />
-    <Reference Include="System.Web.Extensions">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
-    <Reference Include="System.Web.Abstractions" />
-    <Reference Include="System.Web.Routing" />
-    <Reference Include="System.Xml" />
-    <Reference Include="System.Configuration" />
-    <Reference Include="System.Web.Services" />
-    <Reference Include="System.EnterpriseServices" />
-    <Reference Include="System.Web.Mobile" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="AdminMenu.cs" />
diff --git a/src/Orchard.Web/Modules/Orchard.Email/Models/SmtpSettingsPartRecord.cs b/src/Orchard.Web/Modules/Orchard.Email/Models/SmtpSettingsPartRecord.cs
index a9d3950e6..525702caf 100644
--- a/src/Orchard.Web/Modules/Orchard.Email/Models/SmtpSettingsPartRecord.cs
+++ b/src/Orchard.Web/Modules/Orchard.Email/Models/SmtpSettingsPartRecord.cs
@@ -1,6 +1,4 @@
-using System.Net.Mail;
 using Orchard.ContentManagement.Records;
-using System.ComponentModel.DataAnnotations;
 
 namespace Orchard.Email.Models {
     public class SmtpSettingsPartRecord : ContentPartRecord {
diff --git a/src/Orchard.Web/Modules/Orchard.Email/Orchard.Email.csproj b/src/Orchard.Web/Modules/Orchard.Email/Orchard.Email.csproj
index fc2743ca7..e1fe95a38 100644
--- a/src/Orchard.Web/Modules/Orchard.Email/Orchard.Email.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Email/Orchard.Email.csproj
@@ -41,29 +41,11 @@
   <ItemGroup>
     <Reference Include="Microsoft.CSharp" />
     <Reference Include="System" />
-    <Reference Include="System.Data" />
-    <Reference Include="System.ComponentModel.DataAnnotations">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
-    <Reference Include="System.Data.DataSetExtensions" />
-    <Reference Include="System.Web.ApplicationServices" />
-    <Reference Include="System.Web.DynamicData" />
-    <Reference Include="System.Web.Entity" />
-    <Reference Include="System.Web.Extensions" />
     <Reference Include="System.Web.Mvc, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\..\..\..\lib\aspnetmvc\System.Web.Mvc.dll</HintPath>
     </Reference>
-    <Reference Include="System.Drawing" />
     <Reference Include="System.Web" />
-    <Reference Include="System.Web.Abstractions" />
-    <Reference Include="System.Web.Routing" />
-    <Reference Include="System.Xml" />
-    <Reference Include="System.Configuration" />
-    <Reference Include="System.Web.Services" />
-    <Reference Include="System.EnterpriseServices" />
-    <Reference Include="System.Web.Mobile" />
-    <Reference Include="System.Xml.Linq" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Migrations.cs" />
@@ -99,7 +81,7 @@
     </ProjectReference>
   </ItemGroup>
   <ItemGroup>
-      <Content Include="Placement.info" />
+    <Content Include="Placement.info" />
   </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
   <Import Project="$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v10.0\WebApplications\Microsoft.WebApplication.targets" />
diff --git a/src/Orchard.Web/Modules/Orchard.Experimental/Orchard.Experimental.csproj b/src/Orchard.Web/Modules/Orchard.Experimental/Orchard.Experimental.csproj
index eb428165e..ef9c1c805 100644
--- a/src/Orchard.Web/Modules/Orchard.Experimental/Orchard.Experimental.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Experimental/Orchard.Experimental.csproj
@@ -38,37 +38,16 @@
     </Reference>
     <Reference Include="Microsoft.CSharp" />
     <Reference Include="System" />
-    <Reference Include="System.Data" />
-    <Reference Include="System.Drawing" />
-    <Reference Include="System.Web.DynamicData" />
-    <Reference Include="System.Web.Entity" />
-    <Reference Include="System.Web.ApplicationServices" />
-    <Reference Include="System.ComponentModel.DataAnnotations">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
     <Reference Include="System.Core">
       <RequiredTargetFramework>3.5</RequiredTargetFramework>
     </Reference>
-    <Reference Include="System.Data.DataSetExtensions">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
     <Reference Include="System.Web.Mvc, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\..\..\..\lib\aspnetmvc\System.Web.Mvc.dll</HintPath>
     </Reference>
-    <Reference Include="System.Xml.Linq">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
     <Reference Include="System.Web" />
-    <Reference Include="System.Web.Extensions">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
-    <Reference Include="System.Web.Abstractions" />
-    <Reference Include="System.Web.Routing" />
     <Reference Include="System.Xml" />
-    <Reference Include="System.Configuration" />
-    <Reference Include="System.Web.Services" />
-    <Reference Include="System.EnterpriseServices" />
+    <Reference Include="System.Xml.Linq" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="AdminMenu.cs" />
diff --git a/src/Orchard.Web/Modules/Orchard.Indexing/Orchard.Indexing.csproj b/src/Orchard.Web/Modules/Orchard.Indexing/Orchard.Indexing.csproj
index 4a1b81845..343ebbdb3 100644
--- a/src/Orchard.Web/Modules/Orchard.Indexing/Orchard.Indexing.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Indexing/Orchard.Indexing.csproj
@@ -33,25 +33,14 @@
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="Microsoft.CSharp" />
-    <Reference Include="System.Web.DynamicData" />
-    <Reference Include="System.Web.Entity" />
-    <Reference Include="System.Web.ApplicationServices" />
     <Reference Include="System" />
-    <Reference Include="System.Data" />
     <Reference Include="System.Core" />
-    <Reference Include="System.Data.DataSetExtensions" />
-    <Reference Include="System.Web.Extensions" />
     <Reference Include="System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\..\..\..\lib\aspnetmvc\System.Web.Mvc.dll</HintPath>
     </Reference>
-    <Reference Include="System.Xml.Linq" />
-    <Reference Include="System.Drawing" />
     <Reference Include="System.Web" />
-    <Reference Include="System.Xml" />
-    <Reference Include="System.Configuration" />
     <Reference Include="System.Web.Services" />
-    <Reference Include="System.EnterpriseServices" />
   </ItemGroup>
   <ItemGroup>
     <Content Include="Module.txt" />
diff --git a/src/Orchard.Web/Modules/Orchard.Media/Orchard.Media.csproj b/src/Orchard.Web/Modules/Orchard.Media/Orchard.Media.csproj
index 510d90e22..5d74ebd95 100644
--- a/src/Orchard.Web/Modules/Orchard.Media/Orchard.Media.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Media/Orchard.Media.csproj
@@ -44,29 +44,12 @@
       <HintPath>..\..\..\..\lib\sharpziplib\ICSharpCode.SharpZipLib.dll</HintPath>
     </Reference>
     <Reference Include="System" />
-    <Reference Include="System.Data" />
-    <Reference Include="System.ComponentModel.DataAnnotations">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
-    <Reference Include="System.Data.DataSetExtensions" />
-    <Reference Include="System.Web.ApplicationServices" />
-    <Reference Include="System.Web.DynamicData" />
-    <Reference Include="System.Web.Entity" />
-    <Reference Include="System.Web.Extensions" />
-    <Reference Include="System.Drawing" />
+    <Reference Include="System.ComponentModel.DataAnnotations" />
     <Reference Include="System.Web" />
-    <Reference Include="System.Web.Abstractions" />
     <Reference Include="System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\..\..\..\lib\aspnetmvc\System.Web.Mvc.dll</HintPath>
     </Reference>
-    <Reference Include="System.Web.Routing" />
-    <Reference Include="System.Xml" />
-    <Reference Include="System.Configuration" />
-    <Reference Include="System.Web.Services" />
-    <Reference Include="System.EnterpriseServices" />
-    <Reference Include="System.Web.Mobile" />
-    <Reference Include="System.Xml.Linq" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="AdminMenu.cs" />
diff --git a/src/Orchard.Web/Modules/Orchard.Migrations/Orchard.Migrations.csproj b/src/Orchard.Web/Modules/Orchard.Migrations/Orchard.Migrations.csproj
index b97d423b3..456ae0d41 100644
--- a/src/Orchard.Web/Modules/Orchard.Migrations/Orchard.Migrations.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Migrations/Orchard.Migrations.csproj
@@ -35,37 +35,14 @@
   <ItemGroup>
     <Reference Include="Microsoft.CSharp" />
     <Reference Include="System" />
-    <Reference Include="System.Data" />
-    <Reference Include="System.Drawing" />
-    <Reference Include="System.Web.DynamicData" />
-    <Reference Include="System.Web.Entity" />
-    <Reference Include="System.Web.ApplicationServices" />
-    <Reference Include="System.ComponentModel.DataAnnotations">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
     <Reference Include="System.Core">
       <RequiredTargetFramework>3.5</RequiredTargetFramework>
     </Reference>
-    <Reference Include="System.Data.DataSetExtensions">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
+    <Reference Include="System.Web" />
     <Reference Include="System.Web.Mvc, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\..\..\..\lib\aspnetmvc\System.Web.Mvc.dll</HintPath>
     </Reference>
-    <Reference Include="System.Xml.Linq">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
-    <Reference Include="System.Web" />
-    <Reference Include="System.Web.Extensions">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
-    <Reference Include="System.Web.Abstractions" />
-    <Reference Include="System.Web.Routing" />
-    <Reference Include="System.Xml" />
-    <Reference Include="System.Configuration" />
-    <Reference Include="System.Web.Services" />
-    <Reference Include="System.EnterpriseServices" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="AdminMenu.cs" />
diff --git a/src/Orchard.Web/Modules/Orchard.Modules/Orchard.Modules.csproj b/src/Orchard.Web/Modules/Orchard.Modules/Orchard.Modules.csproj
index 6b5038633..fbeabf22a 100644
--- a/src/Orchard.Web/Modules/Orchard.Modules/Orchard.Modules.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Modules/Orchard.Modules.csproj
@@ -44,29 +44,11 @@
       <HintPath>..\..\..\..\lib\autofac\Autofac.dll</HintPath>
     </Reference>
     <Reference Include="System" />
-    <Reference Include="System.Data" />
-    <Reference Include="System.ComponentModel.DataAnnotations">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
-    <Reference Include="System.Data.DataSetExtensions" />
-    <Reference Include="System.Web.ApplicationServices" />
-    <Reference Include="System.Web.DynamicData" />
-    <Reference Include="System.Web.Entity" />
-    <Reference Include="System.Web.Extensions" />
-    <Reference Include="System.Drawing" />
     <Reference Include="System.Web" />
-    <Reference Include="System.Web.Abstractions" />
     <Reference Include="System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\..\..\..\lib\aspnetmvc\System.Web.Mvc.dll</HintPath>
     </Reference>
-    <Reference Include="System.Web.Routing" />
-    <Reference Include="System.Xml" />
-    <Reference Include="System.Configuration" />
-    <Reference Include="System.Web.Services" />
-    <Reference Include="System.EnterpriseServices" />
-    <Reference Include="System.Web.Mobile" />
-    <Reference Include="System.Xml.Linq" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="AdminMenu.cs" />
diff --git a/src/Orchard.Web/Modules/Orchard.MultiTenancy/Orchard.MultiTenancy.csproj b/src/Orchard.Web/Modules/Orchard.MultiTenancy/Orchard.MultiTenancy.csproj
index 016579f15..9091e6fc5 100644
--- a/src/Orchard.Web/Modules/Orchard.MultiTenancy/Orchard.MultiTenancy.csproj
+++ b/src/Orchard.Web/Modules/Orchard.MultiTenancy/Orchard.MultiTenancy.csproj
@@ -44,24 +44,11 @@
       <RequiredTargetFramework>3.5</RequiredTargetFramework>
     </Reference>
     <Reference Include="System.Data" />
-    <Reference Include="System.Data.DataSetExtensions" />
-    <Reference Include="System.Web.ApplicationServices" />
-    <Reference Include="System.Web.DynamicData" />
-    <Reference Include="System.Web.Entity" />
-    <Reference Include="System.Web.Extensions" />
     <Reference Include="System.Web" />
-    <Reference Include="System.Web.Abstractions" />
     <Reference Include="System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\..\..\..\lib\aspnetmvc\System.Web.Mvc.dll</HintPath>
     </Reference>
-    <Reference Include="System.Web.Routing" />
-    <Reference Include="System.Xml" />
-    <Reference Include="System.Configuration" />
-    <Reference Include="System.Web.Services" />
-    <Reference Include="System.EnterpriseServices" />
-    <Reference Include="System.Web.Mobile" />
-    <Reference Include="System.Xml.Linq" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="AdminMenu.cs" />
diff --git a/src/Orchard.Web/Modules/Orchard.Packaging/Orchard.Packaging.csproj b/src/Orchard.Web/Modules/Orchard.Packaging/Orchard.Packaging.csproj
index ef1c9d653..4223fbe26 100644
--- a/src/Orchard.Web/Modules/Orchard.Packaging/Orchard.Packaging.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Packaging/Orchard.Packaging.csproj
@@ -35,38 +35,20 @@
   <ItemGroup>
     <Reference Include="Microsoft.CSharp" />
     <Reference Include="System" />
-    <Reference Include="System.Data" />
-    <Reference Include="System.Drawing" />
-    <Reference Include="System.ServiceModel" />
-    <Reference Include="System.Web.DynamicData" />
-    <Reference Include="System.Web.Entity" />
-    <Reference Include="System.Web.ApplicationServices" />
     <Reference Include="System.ComponentModel.DataAnnotations">
       <RequiredTargetFramework>3.5</RequiredTargetFramework>
     </Reference>
     <Reference Include="System.Core">
       <RequiredTargetFramework>3.5</RequiredTargetFramework>
     </Reference>
-    <Reference Include="System.Data.DataSetExtensions">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
+    <Reference Include="System.ServiceModel" />
     <Reference Include="System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\..\..\..\lib\aspnetmvc\System.Web.Mvc.dll</HintPath>
     </Reference>
-    <Reference Include="System.Xml.Linq">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
     <Reference Include="System.Web" />
-    <Reference Include="System.Web.Extensions">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
-    <Reference Include="System.Web.Abstractions" />
-    <Reference Include="System.Web.Routing" />
     <Reference Include="System.Xml" />
-    <Reference Include="System.Configuration" />
-    <Reference Include="System.Web.Services" />
-    <Reference Include="System.EnterpriseServices" />
+    <Reference Include="System.Xml.Linq" />
     <Reference Include="WindowsBase">
       <Private>True</Private>
     </Reference>
diff --git a/src/Orchard.Web/Modules/Orchard.PublishLater/Orchard.PublishLater.csproj b/src/Orchard.Web/Modules/Orchard.PublishLater/Orchard.PublishLater.csproj
index 40a706eda..21df61ab3 100644
--- a/src/Orchard.Web/Modules/Orchard.PublishLater/Orchard.PublishLater.csproj
+++ b/src/Orchard.Web/Modules/Orchard.PublishLater/Orchard.PublishLater.csproj
@@ -35,37 +35,14 @@
   <ItemGroup>
     <Reference Include="Microsoft.CSharp" />
     <Reference Include="System" />
-    <Reference Include="System.Data" />
-    <Reference Include="System.Drawing" />
-    <Reference Include="System.Web.DynamicData" />
-    <Reference Include="System.Web.Entity" />
-    <Reference Include="System.Web.ApplicationServices" />
-    <Reference Include="System.ComponentModel.DataAnnotations">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
     <Reference Include="System.Core">
       <RequiredTargetFramework>3.5</RequiredTargetFramework>
     </Reference>
-    <Reference Include="System.Data.DataSetExtensions">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
     <Reference Include="System.Web.Mvc, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\..\..\..\lib\aspnetmvc\System.Web.Mvc.dll</HintPath>
     </Reference>
-    <Reference Include="System.Xml.Linq">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
     <Reference Include="System.Web" />
-    <Reference Include="System.Web.Extensions">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
-    <Reference Include="System.Web.Abstractions" />
-    <Reference Include="System.Web.Routing" />
-    <Reference Include="System.Xml" />
-    <Reference Include="System.Configuration" />
-    <Reference Include="System.Web.Services" />
-    <Reference Include="System.EnterpriseServices" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Drivers\PublishLaterPartDriver.cs" />
diff --git a/src/Orchard.Web/Modules/Orchard.Roles/Orchard.Roles.csproj b/src/Orchard.Web/Modules/Orchard.Roles/Orchard.Roles.csproj
index 2391a5824..e9ef62221 100644
--- a/src/Orchard.Web/Modules/Orchard.Roles/Orchard.Roles.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Roles/Orchard.Roles.csproj
@@ -41,29 +41,12 @@
   <ItemGroup>
     <Reference Include="Microsoft.CSharp" />
     <Reference Include="System" />
-    <Reference Include="System.Data" />
-    <Reference Include="System.ComponentModel.DataAnnotations">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
-    <Reference Include="System.Data.DataSetExtensions" />
-    <Reference Include="System.Web.ApplicationServices" />
-    <Reference Include="System.Web.DynamicData" />
-    <Reference Include="System.Web.Entity" />
-    <Reference Include="System.Web.Extensions" />
-    <Reference Include="System.Drawing" />
+    <Reference Include="System.ComponentModel.DataAnnotations" />
     <Reference Include="System.Web" />
-    <Reference Include="System.Web.Abstractions" />
     <Reference Include="System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\..\..\..\lib\aspnetmvc\System.Web.Mvc.dll</HintPath>
     </Reference>
-    <Reference Include="System.Web.Routing" />
-    <Reference Include="System.Xml" />
-    <Reference Include="System.Configuration" />
-    <Reference Include="System.Web.Services" />
-    <Reference Include="System.EnterpriseServices" />
-    <Reference Include="System.Web.Mobile" />
-    <Reference Include="System.Xml.Linq" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="AdminMenu.cs" />
diff --git a/src/Orchard.Web/Modules/Orchard.Search/Orchard.Search.csproj b/src/Orchard.Web/Modules/Orchard.Search/Orchard.Search.csproj
index 4fe19f383..1a62186ab 100644
--- a/src/Orchard.Web/Modules/Orchard.Search/Orchard.Search.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Search/Orchard.Search.csproj
@@ -35,36 +35,13 @@
   <ItemGroup>
     <Reference Include="Microsoft.CSharp" />
     <Reference Include="System" />
-    <Reference Include="System.Data" />
-    <Reference Include="System.Drawing" />
-    <Reference Include="System.Web.DynamicData" />
-    <Reference Include="System.Web.Entity" />
-    <Reference Include="System.Web.ApplicationServices" />
-    <Reference Include="System.ComponentModel.DataAnnotations">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
     <Reference Include="System.Core">
       <RequiredTargetFramework>3.5</RequiredTargetFramework>
     </Reference>
-    <Reference Include="System.Data.DataSetExtensions">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
     <Reference Include="System.Web.Mvc">
       <HintPath>..\..\..\..\lib\aspnetmvc\System.Web.Mvc.dll</HintPath>
     </Reference>
-    <Reference Include="System.Xml.Linq">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
     <Reference Include="System.Web" />
-    <Reference Include="System.Web.Extensions">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
-    <Reference Include="System.Web.Abstractions" />
-    <Reference Include="System.Web.Routing" />
-    <Reference Include="System.Xml" />
-    <Reference Include="System.Configuration" />
-    <Reference Include="System.Web.Services" />
-    <Reference Include="System.EnterpriseServices" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Drivers\SearchFormPartDriver.cs" />
diff --git a/src/Orchard.Web/Modules/Orchard.Setup/Orchard.Setup.csproj b/src/Orchard.Web/Modules/Orchard.Setup/Orchard.Setup.csproj
index 05c650f11..6bcd3cc30 100644
--- a/src/Orchard.Web/Modules/Orchard.Setup/Orchard.Setup.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Setup/Orchard.Setup.csproj
@@ -49,26 +49,13 @@
     <Reference Include="System.ComponentModel.DataAnnotations">
       <RequiredTargetFramework>3.5</RequiredTargetFramework>
     </Reference>
-    <Reference Include="System.Data.DataSetExtensions" />
-    <Reference Include="System.Web.ApplicationServices" />
-    <Reference Include="System.Web.DynamicData" />
-    <Reference Include="System.Web.Entity" />
-    <Reference Include="System.Web.Extensions" />
-    <Reference Include="System.Drawing" />
     <Reference Include="System.Web" />
-    <Reference Include="System.Web.Abstractions" />
     <Reference Include="System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\..\..\..\lib\aspnetmvc\System.Web.Mvc.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="System.Web.Routing" />
-    <Reference Include="System.Xml" />
     <Reference Include="System.Configuration" />
-    <Reference Include="System.Web.Services" />
-    <Reference Include="System.EnterpriseServices" />
-    <Reference Include="System.Web.Mobile" />
-    <Reference Include="System.Xml.Linq" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Annotations\SqlDatabaseConnectionStringAttribute.cs" />
diff --git a/src/Orchard.Web/Modules/Orchard.Tags/Orchard.Tags.csproj b/src/Orchard.Web/Modules/Orchard.Tags/Orchard.Tags.csproj
index 859b22f4c..a2c9c105f 100644
--- a/src/Orchard.Web/Modules/Orchard.Tags/Orchard.Tags.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Tags/Orchard.Tags.csproj
@@ -41,29 +41,12 @@
   <ItemGroup>
     <Reference Include="Microsoft.CSharp" />
     <Reference Include="System" />
-    <Reference Include="System.Data" />
-    <Reference Include="System.ComponentModel.DataAnnotations">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
-    <Reference Include="System.Data.DataSetExtensions" />
-    <Reference Include="System.Web.ApplicationServices" />
-    <Reference Include="System.Web.DynamicData" />
-    <Reference Include="System.Web.Entity" />
-    <Reference Include="System.Web.Extensions" />
-    <Reference Include="System.Drawing" />
+    <Reference Include="System.ComponentModel.DataAnnotations" />
     <Reference Include="System.Web" />
-    <Reference Include="System.Web.Abstractions" />
     <Reference Include="System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\..\..\..\lib\aspnetmvc\System.Web.Mvc.dll</HintPath>
     </Reference>
-    <Reference Include="System.Web.Routing" />
-    <Reference Include="System.Xml" />
-    <Reference Include="System.Configuration" />
-    <Reference Include="System.Web.Services" />
-    <Reference Include="System.EnterpriseServices" />
-    <Reference Include="System.Web.Mobile" />
-    <Reference Include="System.Xml.Linq" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="AdminMenu.cs" />
diff --git a/src/Orchard.Web/Modules/Orchard.Themes/Orchard.Themes.csproj b/src/Orchard.Web/Modules/Orchard.Themes/Orchard.Themes.csproj
index 6f349ce98..cf71f145f 100644
--- a/src/Orchard.Web/Modules/Orchard.Themes/Orchard.Themes.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Themes/Orchard.Themes.csproj
@@ -39,35 +39,13 @@
     <CodeAnalysisRuleSet>AllRules.ruleset</CodeAnalysisRuleSet>
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="Autofac, Version=2.2.4.900, Culture=neutral, PublicKeyToken=17863af14b0044da, processorArchitecture=MSIL">
-      <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\..\..\..\lib\autofac\Autofac.dll</HintPath>
-    </Reference>
     <Reference Include="Microsoft.CSharp" />
     <Reference Include="System" />
-    <Reference Include="System.Data" />
-    <Reference Include="System.ComponentModel.DataAnnotations">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
-    <Reference Include="System.Data.DataSetExtensions" />
-    <Reference Include="System.Web.ApplicationServices" />
-    <Reference Include="System.Web.DynamicData" />
-    <Reference Include="System.Web.Entity" />
-    <Reference Include="System.Web.Extensions" />
-    <Reference Include="System.Drawing" />
     <Reference Include="System.Web" />
-    <Reference Include="System.Web.Abstractions" />
     <Reference Include="System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\..\..\..\lib\aspnetmvc\System.Web.Mvc.dll</HintPath>
     </Reference>
-    <Reference Include="System.Web.Routing" />
-    <Reference Include="System.Xml" />
-    <Reference Include="System.Configuration" />
-    <Reference Include="System.Web.Services" />
-    <Reference Include="System.EnterpriseServices" />
-    <Reference Include="System.Web.Mobile" />
-    <Reference Include="System.Xml.Linq" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="AdminMenu.cs" />
diff --git a/src/Orchard.Web/Modules/Orchard.Users/Commands/UserCommands.cs b/src/Orchard.Web/Modules/Orchard.Users/Commands/UserCommands.cs
index 0d47db6ad..0a9021aba 100644
--- a/src/Orchard.Web/Modules/Orchard.Users/Commands/UserCommands.cs
+++ b/src/Orchard.Web/Modules/Orchard.Users/Commands/UserCommands.cs
@@ -1,13 +1,7 @@
-using System;
-using System.Linq;
-using System.Text.RegularExpressions;
-using System.Xml.Linq;
-using Orchard.Commands;
+using Orchard.Commands;
 using Orchard.ContentManagement;
-using Orchard.ContentManagement.Aspects;
 using Orchard.Security;
 using Orchard.Users.Services;
-using System.Web.Security;
 
 namespace Orchard.Users.Commands {
     public class UserCommands : DefaultOrchardCommandHandler {
diff --git a/src/Orchard.Web/Modules/Orchard.Users/Orchard.Users.csproj b/src/Orchard.Web/Modules/Orchard.Users/Orchard.Users.csproj
index e78ca1397..3801e8282 100644
--- a/src/Orchard.Web/Modules/Orchard.Users/Orchard.Users.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Users/Orchard.Users.csproj
@@ -41,29 +41,16 @@
   <ItemGroup>
     <Reference Include="Microsoft.CSharp" />
     <Reference Include="System" />
-    <Reference Include="System.Data" />
     <Reference Include="System.ComponentModel.DataAnnotations">
       <RequiredTargetFramework>3.5</RequiredTargetFramework>
     </Reference>
-    <Reference Include="System.Data.DataSetExtensions" />
-    <Reference Include="System.Security" />
     <Reference Include="System.Web.ApplicationServices" />
-    <Reference Include="System.Web.DynamicData" />
-    <Reference Include="System.Web.Entity" />
-    <Reference Include="System.Web.Extensions" />
-    <Reference Include="System.Drawing" />
     <Reference Include="System.Web" />
-    <Reference Include="System.Web.Abstractions" />
     <Reference Include="System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\..\..\..\lib\aspnetmvc\System.Web.Mvc.dll</HintPath>
     </Reference>
-    <Reference Include="System.Web.Routing" />
     <Reference Include="System.Xml" />
-    <Reference Include="System.Configuration" />
-    <Reference Include="System.Web.Services" />
-    <Reference Include="System.EnterpriseServices" />
-    <Reference Include="System.Web.Mobile" />
     <Reference Include="System.Xml.Linq" />
   </ItemGroup>
   <ItemGroup>
diff --git a/src/Orchard.Web/Modules/Orchard.Widgets/Orchard.Widgets.csproj b/src/Orchard.Web/Modules/Orchard.Widgets/Orchard.Widgets.csproj
index 2b580d82a..19ff6f634 100644
--- a/src/Orchard.Web/Modules/Orchard.Widgets/Orchard.Widgets.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Widgets/Orchard.Widgets.csproj
@@ -33,10 +33,6 @@
     <WarningLevel>4</WarningLevel>
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="ClaySharp, Version=1.0.0.0, Culture=neutral, processorArchitecture=MSIL">
-      <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\..\..\..\lib\claysharp\ClaySharp.dll</HintPath>
-    </Reference>
     <Reference Include="Microsoft.CSharp" />
     <Reference Include="Microsoft.Scripting, Version=1.1.0.1, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
@@ -44,26 +40,11 @@
     </Reference>
     <Reference Include="System" />
     <Reference Include="System.ComponentModel.DataAnnotations" />
-    <Reference Include="System.Web.DynamicData" />
-    <Reference Include="System.Web.Entity" />
-    <Reference Include="System.Web.ApplicationServices" />
-    <Reference Include="System.Data.DataSetExtensions">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
     <Reference Include="System.Web.Mvc, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\..\..\..\lib\aspnetmvc\System.Web.Mvc.dll</HintPath>
     </Reference>
-    <Reference Include="System.Xml.Linq">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
     <Reference Include="System.Web" />
-    <Reference Include="System.Web.Extensions">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
-    <Reference Include="System.Web.Abstractions" />
-    <Reference Include="System.Web.Routing" />
-    <Reference Include="System.Configuration" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="AdminMenu.cs" />
diff --git a/src/Orchard.Web/Modules/Orchard.jQuery/Orchard.jQuery.csproj b/src/Orchard.Web/Modules/Orchard.jQuery/Orchard.jQuery.csproj
index 92c94d542..029d96d21 100644
--- a/src/Orchard.Web/Modules/Orchard.jQuery/Orchard.jQuery.csproj
+++ b/src/Orchard.Web/Modules/Orchard.jQuery/Orchard.jQuery.csproj
@@ -39,35 +39,11 @@
     <CodeAnalysisRuleSet>AllRules.ruleset</CodeAnalysisRuleSet>
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="Autofac, Version=2.1.13.813, Culture=neutral, PublicKeyToken=17863af14b0044da, processorArchitecture=MSIL">
-      <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\..\..\..\lib\autofac\Autofac.dll</HintPath>
-    </Reference>
-    <Reference Include="System" />
-    <Reference Include="System.Data" />
-    <Reference Include="System.ComponentModel.DataAnnotations">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
-    <Reference Include="System.Data.DataSetExtensions" />
-    <Reference Include="System.Web.ApplicationServices" />
-    <Reference Include="System.Web.DynamicData" />
-    <Reference Include="System.Web.Entity" />
-    <Reference Include="System.Web.Extensions" />
-    <Reference Include="System.Drawing" />
-    <Reference Include="System.Web" />
-    <Reference Include="System.Web.Abstractions" />
     <Reference Include="System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\..\..\..\lib\aspnetmvc\System.Web.Mvc.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="System.Web.Routing" />
-    <Reference Include="System.Xml" />
-    <Reference Include="System.Configuration" />
-    <Reference Include="System.Web.Services" />
-    <Reference Include="System.EnterpriseServices" />
-    <Reference Include="System.Web.Mobile" />
-    <Reference Include="System.Xml.Linq" />
   </ItemGroup>
   <ItemGroup>
     <Content Include="Scripts\jquery-1.4.2.js" />
@@ -100,10 +76,6 @@
       <Project>{2D1D92BB-4555-4CBE-8D0E-63563D6CE4C6}</Project>
       <Name>Orchard.Framework</Name>
     </ProjectReference>
-    <ProjectReference Include="..\..\Core\Orchard.Core.csproj">
-      <Project>{9916839C-39FC-4CEB-A5AF-89CA7E87119F}</Project>
-      <Name>Orchard.Core</Name>
-    </ProjectReference>
   </ItemGroup>
   <ItemGroup>
     <Content Include="Module.txt" />
diff --git a/src/Orchard.Web/Modules/TinyMce/TinyMce.csproj b/src/Orchard.Web/Modules/TinyMce/TinyMce.csproj
index 9e5c17b6d..5535ea9bd 100644
--- a/src/Orchard.Web/Modules/TinyMce/TinyMce.csproj
+++ b/src/Orchard.Web/Modules/TinyMce/TinyMce.csproj
@@ -40,27 +40,11 @@
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
-    <Reference Include="System.Data" />
-    <Reference Include="System.ComponentModel.DataAnnotations">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
-    <Reference Include="System.Data.DataSetExtensions" />
-    <Reference Include="System.Web.ApplicationServices" />
-    <Reference Include="System.Web.DynamicData" />
-    <Reference Include="System.Web.Entity" />
-    <Reference Include="System.Web.Extensions" />
-    <Reference Include="System.Drawing" />
     <Reference Include="System.Web" />
     <Reference Include="System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\..\..\..\lib\aspnetmvc\System.Web.Mvc.dll</HintPath>
     </Reference>
-    <Reference Include="System.Xml" />
-    <Reference Include="System.Configuration" />
-    <Reference Include="System.Web.Services" />
-    <Reference Include="System.EnterpriseServices" />
-    <Reference Include="System.Web.Mobile" />
-    <Reference Include="System.Xml.Linq" />
   </ItemGroup>
   <ItemGroup>
     <Content Include="Module.txt" />
@@ -138,10 +122,6 @@
       <Project>{2D1D92BB-4555-4CBE-8D0E-63563D6CE4C6}</Project>
       <Name>Orchard.Framework</Name>
     </ProjectReference>
-    <ProjectReference Include="..\..\Core\Orchard.Core.csproj">
-      <Project>{9916839C-39FC-4CEB-A5AF-89CA7E87119F}</Project>
-      <Name>Orchard.Core</Name>
-    </ProjectReference>
   </ItemGroup>
   <ItemGroup>
     <Content Include="Scripts\plugins\addmedia\addmedia.htm" />
diff --git a/src/Orchard.Web/Orchard.Web.csproj b/src/Orchard.Web/Orchard.Web.csproj
index 6098750bf..cb60437ed 100644
--- a/src/Orchard.Web/Orchard.Web.csproj
+++ b/src/Orchard.Web/Orchard.Web.csproj
@@ -85,7 +85,6 @@
     <Reference Include="System.Web.DynamicData" />
     <Reference Include="System.Web.Entity" />
     <Reference Include="System.Web.Extensions" />
-    <Reference Include="System.Drawing" />
     <Reference Include="System.Web" />
     <Reference Include="System.Web.Abstractions" />
     <Reference Include="System.Web.Helpers, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
diff --git a/src/Orchard/Orchard.Framework.csproj b/src/Orchard/Orchard.Framework.csproj
index 3c0329da1..572d7c91f 100644
--- a/src/Orchard/Orchard.Framework.csproj
+++ b/src/Orchard/Orchard.Framework.csproj
@@ -127,9 +127,6 @@
     </Reference>
     <Reference Include="System.Transactions" />
     <Reference Include="System.Web" />
-    <Reference Include="System.Web.Abstractions">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-    </Reference>
     <Reference Include="System.Web.ApplicationServices" />
     <Reference Include="System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>