diff --git a/lib/lucene.net/Lucene.Net.dll b/lib/lucene.net/Lucene.Net.dll
index e21436eca..7f78e8b04 100644
Binary files a/lib/lucene.net/Lucene.Net.dll and b/lib/lucene.net/Lucene.Net.dll differ
diff --git a/lib/lucene.net/Lucene.Net.pdb b/lib/lucene.net/Lucene.Net.pdb
index 988f210d4..97ead5096 100644
Binary files a/lib/lucene.net/Lucene.Net.pdb and b/lib/lucene.net/Lucene.Net.pdb differ
diff --git a/lib/yaml/Yaml.dll b/lib/yaml/Yaml.dll
index 09f66b8c2..358eb6d3d 100644
Binary files a/lib/yaml/Yaml.dll and b/lib/yaml/Yaml.dll differ
diff --git a/lib/yaml/YamlSerializer.dll b/lib/yaml/YamlSerializer.dll
index 7ce6c235b..063757ddf 100644
Binary files a/lib/yaml/YamlSerializer.dll and b/lib/yaml/YamlSerializer.dll differ
diff --git a/src/Orchard.Web/Web.config b/src/Orchard.Web/Web.config
index 05dce1250..c9b703275 100644
--- a/src/Orchard.Web/Web.config
+++ b/src/Orchard.Web/Web.config
@@ -13,8 +13,14 @@
       <section name="host" type="System.Web.WebPages.Razor.Configuration.HostSection, System.Web.WebPages.Razor" requirePermission="false" />
       <section name="pages" type="System.Web.WebPages.Razor.Configuration.RazorPagesSection, System.Web.WebPages.Razor" requirePermission="false" />
     </sectionGroup>
+
+    <section name="hibernate-configuration" requirePermission="false" type="NHibernate.Cfg.ConfigurationSectionHandler, NHibernate" />
   </configSections>
 
+  <hibernate-configuration xmlns="urn:nhibernate-configuration-2.2">
+    <reflection-optimizer use="false"/>
+  </hibernate-configuration>
+
   <appSettings>
     <!--  
         This is a workaround. There’s a known issue that causes Forms Authentication to always redirect unauthenticated users 
diff --git a/src/Orchard/Environment/Extensions/Compilers/CSharpExtensionDirectoryCompiler.cs b/src/Orchard/Environment/Extensions/Compilers/CSharpExtensionDirectoryCompiler.cs
index 3e3d2da99..d90f55bf9 100644
--- a/src/Orchard/Environment/Extensions/Compilers/CSharpExtensionDirectoryCompiler.cs
+++ b/src/Orchard/Environment/Extensions/Compilers/CSharpExtensionDirectoryCompiler.cs
@@ -19,7 +19,6 @@ namespace Orchard.Environment.Extensions.Compilers {
             _buildManager = buildManager;
         }
 
-        [SecuritySafeCritical]
         public CompilerResults CompileProject(string location) {
             var codeProvider = CodeDomProvider.CreateProvider("cs");
 
diff --git a/src/Orchard/Environment/Extensions/Compilers/CSharpProjectFullTrustCompiler.cs b/src/Orchard/Environment/Extensions/Compilers/CSharpProjectFullTrustCompiler.cs
index f770a28d1..936a22fef 100644
--- a/src/Orchard/Environment/Extensions/Compilers/CSharpProjectFullTrustCompiler.cs
+++ b/src/Orchard/Environment/Extensions/Compilers/CSharpProjectFullTrustCompiler.cs
@@ -23,7 +23,6 @@ namespace Orchard.Environment.Extensions.Compilers {
         /// Compile a csproj file given its virtual path. Use the CSharp CodeDomProvider
         /// class, which is only available in full trust.
         /// </summary>
-        [SecuritySafeCritical]
         public CompilerResults CompileProject(string virtualPath, string outputDirectory) {
             var codeProvider = CodeDomProvider.CreateProvider("cs");
             var directory = _virtualPathProvider.GetDirectoryName(virtualPath);
diff --git a/src/Orchard/Properties/AssemblyInfo.cs b/src/Orchard/Properties/AssemblyInfo.cs
index b6b0a9e14..e8e04c110 100644
--- a/src/Orchard/Properties/AssemblyInfo.cs
+++ b/src/Orchard/Properties/AssemblyInfo.cs
@@ -37,5 +37,4 @@ using System.Security;
 
 [assembly: AssemblyVersion("0.8.0")]
 [assembly: AssemblyFileVersion("0.8.0")]
-[assembly: AllowPartiallyTrustedCallers]
-[assembly: SecurityRules(SecurityRuleSet.Level2)]
\ No newline at end of file
+[assembly: SecurityTransparent]
\ No newline at end of file