diff --git a/Nuclex.Support (Xbox 360).csproj b/Nuclex.Support (Xbox 360).csproj
index 228c046..5d4f7ed 100644
--- a/Nuclex.Support (Xbox 360).csproj	
+++ b/Nuclex.Support (Xbox 360).csproj	
@@ -1,4 +1,4 @@
-<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" ToolsVersion="3.5">
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" ToolsVersion="3.5">
   <PropertyGroup>
     <ProjectGuid>{DFFEAB70-51B8-4714-BCA6-79B733BBC520}</ProjectGuid>
     <ProjectTypeGuids>{2DF5C3F4-5A5F-47a9-8E94-23B4456F55E2};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
@@ -58,10 +58,6 @@
       <RequiredTargetFramework>3.5</RequiredTargetFramework>
       <Private>False</Private>
     </Reference>
-    <Reference Include="System.Xml.Linq">
-      <RequiredTargetFramework>3.5</RequiredTargetFramework>
-      <Private>False</Private>
-    </Reference>
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Properties\AssemblyInfo.cs" />
diff --git a/Source/Scheduling/Scheduler.Test.cs b/Source/Scheduling/Scheduler.Test.cs
index 3d58533..fb0190b 100644
--- a/Source/Scheduling/Scheduler.Test.cs
+++ b/Source/Scheduling/Scheduler.Test.cs
@@ -455,6 +455,22 @@ namespace Nuclex.Support.Scheduling {
       }
     }
 
+    // TODO: Unit testing caused this exception
+    //
+    // Nuclex.Support.Scheduling.SchedulerTest.TestThrowOnNotifyAtWithUnspecifiedDateTimeKind :
+    //   System.NullReferenceException: Der Objektverweis wurde nicht auf
+    //     eine Objektinstanz festgelegt.
+    //   bei Nuclex.Support.Scheduling.SchedulerTest.TestSubscriber.Callback(Object state)
+    //     in D:\Devel\framework\Nuclex.Support\Source\Scheduling\Scheduler.Test.cs:Zeile 177.
+    //   bei System.Threading._ThreadPoolWaitCallback.WaitCallback_Context(Object state)
+    //   bei System.Threading.ExecutionContext.Run(
+    //     ExecutionContext executionContext, ContextCallback callback, Object state
+    //   )
+    //   bei System.Threading._ThreadPoolWaitCallback.PerformWaitCallbackInternal(
+    //     _ThreadPoolWaitCallback tpWaitCallBack
+    //   )
+    //   bei System.Threading._ThreadPoolWaitCallback.PerformWaitCallback(Object state)
+
     /// <summary>Returns the provided date/time value as a utc time value</summary>
     /// <param name="dateTime">Date/time value that will be returned as UTC</param>
     /// <returns>The provided date/time value as UTC</returns>