diff --git a/src/Umbraco.Web.UI/web.Template.Debug.config b/src/Umbraco.Web.UI/web.Template.Debug.config
index 3318b0a4a6..766615e209 100644
--- a/src/Umbraco.Web.UI/web.Template.Debug.config
+++ b/src/Umbraco.Web.UI/web.Template.Debug.config
@@ -1,40 +1,44 @@
 <?xml version="1.0"?>
 
-<!-- For more information on using web.config transformation visit http://go.microsoft.com/fwlink/?LinkId=125889 -->
-
 <configuration xmlns:xdt="http://schemas.microsoft.com/XML-Document-Transform">
   <!--
-    In the example below, the "SetAttributes" transform will change the value of 
-    "connectionString" to use "ReleaseSQLServer" only when the "Match" locator 
-    finds an atrribute "name" that has a value of "MyDB".
+    CAREFUL!
+    ========
     
-    <connectionStrings>
-      <add name="MyDB" 
-        connectionString="Data Source=ReleaseSQLServer;Initial Catalog=MyReleaseDB;Integrated Security=True" 
-        xdt:Transform="SetAttributes" xdt:Locator="Match(name)"/>
-    </connectionStrings>
+    ONLY edit this if a certain change NEEDS to go into the config file of EVERYBODY contributing to the project.
+    
+    After first build you will get your own web.config, which is no included in source control.
+    
+    In the web.config you can edit all you want, it won't be overwritten, but it WILL be altered by this transform file.
+    
+    The transforms in this file only apply to debugging, not to the web.config that will be released, see web.Template.Release.config for that
+    
+    2012-11-08 SJ - Add Medium trust for everybody so we'll see errors early on
+    2012-11-22 SJ - Added MVC v2 redirect to v3 because ClientDependency.Mvc is built against MVC2 
+                    (not sure if this is the right thing to do but at least the project runs again)
   -->
-  <appSettings>
-    <add xdt:Transform="Replace" xdt:Locator="Match(key)" key="umbracoDbDSN"
-         value="datalayer=SQLCE4Umbraco.SqlCEHelper,SQLCE4Umbraco;data source=|DataDirectory|\Umbraco.sdf"/>
-    <add xdt:Transform="Replace" xdt:Locator="Match(key)" key="umbracoConfigurationStatus"
-         value="4.10.0"/>
-  </appSettings>
-
+  
   <system.web>
     <compilation debug="true" xdt:Transform="SetAttributes(debug)" />
     <trust level="Medium" xdt:Transform="Remove" />
     <trust level="Medium" originUrl=".*"  xdt:Transform="Insert" />
-    <!--
-      In the example below, the "Replace" transform will replace the entire 
-      <customErrors> section of your web.config file.
-      Note that because there is only one customErrors section under the 
-      <system.web> node, there is no need to use the "xdt:Locator" attribute.
-      
-      <customErrors defaultRedirect="GenericError.htm"
-        mode="RemoteOnly" xdt:Transform="Replace">
-        <error statusCode="500" redirect="InternalError.htm"/>
-      </customErrors>
-    -->
   </system.web>
+
+  <runtime>
+    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
+      <dependentAssembly xdt:Transform="RemoveAll" />
+      <dependentAssembly xdt:Transform="Insert">
+        <assemblyIdentity name="System.Web.Extensions" publicKeyToken="31bf3856ad364e35" />
+        <bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="4.0.0.0" />
+      </dependentAssembly>
+      <dependentAssembly xdt:Transform="Insert">
+        <assemblyIdentity name="System.Web.Extensions.Design" publicKeyToken="31bf3856ad364e35" />
+        <bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="4.0.0.0" />
+      </dependentAssembly>
+      <dependentAssembly xdt:Transform="Insert">
+        <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35"/>
+        <bindingRedirect oldVersion="1.0.0.0-2.0.0.0" newVersion="3.0.0.0"/>
+      </dependentAssembly>      
+    </assemblyBinding>
+  </runtime>
 </configuration>
\ No newline at end of file