diff --git a/Src/Newtonsoft.Json.Tests/Properties/AssemblyInfo.cs b/Src/Newtonsoft.Json.Tests/Properties/AssemblyInfo.cs
index bcbdae61..aeb236f9 100644
--- a/Src/Newtonsoft.Json.Tests/Properties/AssemblyInfo.cs
+++ b/Src/Newtonsoft.Json.Tests/Properties/AssemblyInfo.cs
@@ -76,5 +76,5 @@ using System.Security;
 // by using the '*' as shown below:
 [assembly: AssemblyVersion("4.5.0.0")]
 #if !PocketPC
-[assembly: AssemblyFileVersion("4.5.10.15509")]
+[assembly: AssemblyFileVersion("4.5.10.15511")]
 #endif
diff --git a/Src/Newtonsoft.Json.Tests/Serialization/TraceWriterTests.cs b/Src/Newtonsoft.Json.Tests/Serialization/TraceWriterTests.cs
index f024b476..50e420cb 100644
--- a/Src/Newtonsoft.Json.Tests/Serialization/TraceWriterTests.cs
+++ b/Src/Newtonsoft.Json.Tests/Serialization/TraceWriterTests.cs
@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
+using System.Globalization;
 using System.IO;
 using System.Runtime.Serialization;
 using System.Runtime.Serialization.Formatters;
@@ -23,9 +24,95 @@ using System.Linq;
 
 namespace Newtonsoft.Json.Tests.Serialization
 {
+  public class Staff
+  {
+    public string Name { get; set; }
+    public DateTime StartDate { get; set; }
+    public IList<string> Roles { get; set; }
+  }
+
   [TestFixture]
   public class TraceWriterTests : TestFixtureBase
   {
+#if !(SILVERLIGHT || PORTABLE || NETFX_CORE)
+    [Test]
+    public void DiagnosticsTraceWriterTest()
+    {
+      StringWriter sw = new StringWriter();
+      TextWriterTraceListener listener = new TextWriterTraceListener(sw);
+
+      try
+      {
+        Trace.AutoFlush = true;
+        Trace.Listeners.Add(listener);
+
+        DiagnosticsTraceWriter traceWriter = new DiagnosticsTraceWriter();
+        traceWriter.Trace(TraceLevel.Verbose, "Verbose!", null);
+        traceWriter.Trace(TraceLevel.Info, "Info!", null);
+        traceWriter.Trace(TraceLevel.Warning, "Warning!", null);
+        traceWriter.Trace(TraceLevel.Error, "Error!", null);
+        traceWriter.Trace(TraceLevel.Off, "Off!", null);
+
+        Assert.AreEqual(@"Newtonsoft.Json Verbose: 0 : Verbose!
+Newtonsoft.Json Information: 0 : Info!
+Newtonsoft.Json Warning: 0 : Warning!
+Newtonsoft.Json Error: 0 : Error!
+", sw.ToString());
+      }
+      finally
+      {
+        Trace.Listeners.Remove(listener);
+        Trace.AutoFlush = false;
+      }
+    }
+#endif
+
+    [Test]
+    public void MemoryTraceWriterTest()
+    {
+      Staff staff = new Staff();
+      staff.Name = "Arnie Admin";
+      staff.Roles = new List<string> {"Administrator"};
+      staff.StartDate = DateTime.Now;
+
+      ITraceWriter traceWriter = new MemoryTraceWriter();
+
+      JsonConvert.SerializeObject(
+        staff,
+        new JsonSerializerSettings {TraceWriter = traceWriter, Converters = {new JavaScriptDateTimeConverter()}});
+
+      Console.WriteLine(traceWriter);
+      // 2012-11-11T12:08:42.761 Info Started serializing Newtonsoft.Json.Tests.Serialization.Staff. Path ''.
+      // 2012-11-11T12:08:42.785 Info Started serializing System.DateTime with converter Newtonsoft.Json.Converters.JavaScriptDateTimeConverter. Path 'StartDate'.
+      // 2012-11-11T12:08:42.791 Info Finished serializing System.DateTime with converter Newtonsoft.Json.Converters.JavaScriptDateTimeConverter. Path 'StartDate'.
+      // 2012-11-11T12:08:42.797 Info Started serializing System.Collections.Generic.List`1[System.String]. Path 'Roles'.
+      // 2012-11-11T12:08:42.798 Info Finished serializing System.Collections.Generic.List`1[System.String]. Path 'Roles'.
+      // 2012-11-11T12:08:42.799 Info Finished serializing Newtonsoft.Json.Tests.Serialization.Staff. Path ''.
+
+      MemoryTraceWriter memoryTraceWriter = (MemoryTraceWriter)traceWriter;
+
+      Assert.AreEqual(743, memoryTraceWriter.ToString().Length);
+      Assert.AreEqual(6, memoryTraceWriter.GetTraceMessages().Count());
+    }
+
+    [Test]
+    public void MemoryTraceWriterLimitTest()
+    {
+      MemoryTraceWriter traceWriter = new MemoryTraceWriter();
+
+      for (int i = 0; i < 1005; i++)
+      {
+        traceWriter.Trace(TraceLevel.Verbose, (i + 1).ToString(CultureInfo.InvariantCulture), null);
+      }
+
+      IList<string> traceMessages = traceWriter.GetTraceMessages().ToList();
+
+      Assert.AreEqual(1000, traceMessages.Count);
+
+      Assert.IsTrue(traceMessages.First().EndsWith(" 6"));
+      Assert.IsTrue(traceMessages.Last().EndsWith(" 1005"));
+    }
+
     [Test]
     public void Serialize()
     {
diff --git a/Src/Newtonsoft.Json/Newtonsoft.Json.Net20.csproj b/Src/Newtonsoft.Json/Newtonsoft.Json.Net20.csproj
index 0626850a..d60c32ee 100644
--- a/Src/Newtonsoft.Json/Newtonsoft.Json.Net20.csproj
+++ b/Src/Newtonsoft.Json/Newtonsoft.Json.Net20.csproj
@@ -103,8 +103,11 @@
     <Compile Include="JsonPosition.cs" />
     <Compile Include="Linq\JPropertyKeyedCollection.cs" />
     <Compile Include="SerializationBinder.cs" />
+    <Compile Include="Serialization\DiagnosticsTraceWriter.cs" />
     <Compile Include="Serialization\ITraceWriter.cs" />
     <Compile Include="Serialization\JsonContainerContract.cs" />
+    <Compile Include="Serialization\JsonDynamicContract.cs" />
+    <Compile Include="Serialization\MemoryTraceWriter.cs" />
     <Compile Include="StreamingContext.cs" />
     <Compile Include="Utilities\LinqBridge.cs" />
     <Compile Include="Linq\JPath.cs" />
diff --git a/Src/Newtonsoft.Json/Newtonsoft.Json.Net35.csproj b/Src/Newtonsoft.Json/Newtonsoft.Json.Net35.csproj
index 3fdc02bf..500953ae 100644
--- a/Src/Newtonsoft.Json/Newtonsoft.Json.Net35.csproj
+++ b/Src/Newtonsoft.Json/Newtonsoft.Json.Net35.csproj
@@ -116,8 +116,10 @@
     <Compile Include="Linq\JPropertyDescriptor.cs" />
     <Compile Include="Linq\JPropertyKeyedCollection.cs" />
     <Compile Include="SerializationBinder.cs" />
+    <Compile Include="Serialization\DiagnosticsTraceWriter.cs" />
     <Compile Include="Serialization\ITraceWriter.cs" />
     <Compile Include="Serialization\JsonContainerContract.cs" />
+    <Compile Include="Serialization\MemoryTraceWriter.cs" />
     <Compile Include="StreamingContext.cs" />
     <Compile Include="TraceLevel.cs" />
     <Compile Include="Utilities\DynamicProxy.cs" />
diff --git a/Src/Newtonsoft.Json/Newtonsoft.Json.Portable.csproj b/Src/Newtonsoft.Json/Newtonsoft.Json.Portable.csproj
index 4d548881..8cccf090 100644
--- a/Src/Newtonsoft.Json/Newtonsoft.Json.Portable.csproj
+++ b/Src/Newtonsoft.Json/Newtonsoft.Json.Portable.csproj
@@ -143,6 +143,7 @@
     <Compile Include="Serialization\DefaultContractResolver.cs" />
     <Compile Include="Serialization\DefaultReferenceResolver.cs" />
     <Compile Include="Serialization\DefaultSerializationBinder.cs" />
+    <Compile Include="Serialization\DiagnosticsTraceWriter.cs" />
     <Compile Include="Serialization\DynamicValueProvider.cs" />
     <Compile Include="Serialization\ErrorContext.cs" />
     <Compile Include="Serialization\ErrorEventArgs.cs" />
@@ -169,6 +170,7 @@
     <Compile Include="Serialization\JsonStringContract.cs" />
     <Compile Include="Serialization\JsonTypeReflector.cs" />
     <Compile Include="Serialization\LateBoundMetadataTypeAttribute.cs" />
+    <Compile Include="Serialization\MemoryTraceWriter.cs" />
     <Compile Include="Serialization\ObjectConstructor.cs" />
     <Compile Include="Serialization\OnErrorAttribute.cs" />
     <Compile Include="Serialization\ReflectionValueProvider.cs" />
diff --git a/Src/Newtonsoft.Json/Newtonsoft.Json.Silverlight.csproj b/Src/Newtonsoft.Json/Newtonsoft.Json.Silverlight.csproj
index 6846a387..483ae3fd 100644
--- a/Src/Newtonsoft.Json/Newtonsoft.Json.Silverlight.csproj
+++ b/Src/Newtonsoft.Json/Newtonsoft.Json.Silverlight.csproj
@@ -166,6 +166,7 @@
     <Compile Include="Serialization\DefaultContractResolver.cs" />
     <Compile Include="Serialization\DefaultReferenceResolver.cs" />
     <Compile Include="Serialization\DefaultSerializationBinder.cs" />
+    <Compile Include="Serialization\DiagnosticsTraceWriter.cs" />
     <Compile Include="Serialization\DynamicValueProvider.cs" />
     <Compile Include="Serialization\ErrorContext.cs" />
     <Compile Include="Serialization\ErrorEventArgs.cs" />
@@ -191,6 +192,7 @@
     <Compile Include="Serialization\JsonSerializerInternalWriter.cs" />
     <Compile Include="Serialization\JsonStringContract.cs" />
     <Compile Include="Serialization\LateBoundMetadataTypeAttribute.cs" />
+    <Compile Include="Serialization\MemoryTraceWriter.cs" />
     <Compile Include="Serialization\ObjectConstructor.cs" />
     <Compile Include="Serialization\OnErrorAttribute.cs" />
     <Compile Include="Serialization\ReflectionValueProvider.cs" />
diff --git a/Src/Newtonsoft.Json/Newtonsoft.Json.WinRT.csproj b/Src/Newtonsoft.Json/Newtonsoft.Json.WinRT.csproj
index 6851d875..02cc8313 100644
--- a/Src/Newtonsoft.Json/Newtonsoft.Json.WinRT.csproj
+++ b/Src/Newtonsoft.Json/Newtonsoft.Json.WinRT.csproj
@@ -241,6 +241,8 @@
     <Compile Include="Serialization\ObjectConstructor.cs" />
     <Compile Include="Serialization\OnErrorAttribute.cs" />
     <Compile Include="Serialization\ReflectionValueProvider.cs" />
+    <Compile Include="Serialization\DiagnosticsTraceWriter.cs" />
+    <Compile Include="Serialization\MemoryTraceWriter.cs" />
     <Compile Include="StreamingContext.cs" />
     <Compile Include="TraceLevel.cs" />
     <Compile Include="TypeNameHandling.cs" />
diff --git a/Src/Newtonsoft.Json/Newtonsoft.Json.WindowsPhone.csproj b/Src/Newtonsoft.Json/Newtonsoft.Json.WindowsPhone.csproj
index 91566f20..ef4f4a77 100644
--- a/Src/Newtonsoft.Json/Newtonsoft.Json.WindowsPhone.csproj
+++ b/Src/Newtonsoft.Json/Newtonsoft.Json.WindowsPhone.csproj
@@ -139,6 +139,7 @@
     <Compile Include="Serialization\DefaultContractResolver.cs" />
     <Compile Include="Serialization\DefaultReferenceResolver.cs" />
     <Compile Include="Serialization\DefaultSerializationBinder.cs" />
+    <Compile Include="Serialization\DiagnosticsTraceWriter.cs" />
     <Compile Include="Serialization\DynamicValueProvider.cs" />
     <Compile Include="Serialization\ErrorContext.cs" />
     <Compile Include="Serialization\ErrorEventArgs.cs" />
@@ -164,6 +165,7 @@
     <Compile Include="Serialization\JsonSerializerInternalWriter.cs" />
     <Compile Include="Serialization\JsonStringContract.cs" />
     <Compile Include="Serialization\LateBoundMetadataTypeAttribute.cs" />
+    <Compile Include="Serialization\MemoryTraceWriter.cs" />
     <Compile Include="Serialization\ObjectConstructor.cs" />
     <Compile Include="Serialization\OnErrorAttribute.cs" />
     <Compile Include="Serialization\ReflectionValueProvider.cs" />
diff --git a/Src/Newtonsoft.Json/Newtonsoft.Json.csproj b/Src/Newtonsoft.Json/Newtonsoft.Json.csproj
index 65f266fb..b1295ef0 100644
--- a/Src/Newtonsoft.Json/Newtonsoft.Json.csproj
+++ b/Src/Newtonsoft.Json/Newtonsoft.Json.csproj
@@ -113,8 +113,10 @@
     <Compile Include="JsonConstructorAttribute.cs" />
     <Compile Include="JsonPosition.cs" />
     <Compile Include="Linq\JPropertyKeyedCollection.cs" />
+    <Compile Include="Serialization\DiagnosticsTraceWriter.cs" />
     <Compile Include="Serialization\ITraceWriter.cs" />
     <Compile Include="Serialization\JsonContainerContract.cs" />
+    <Compile Include="Serialization\MemoryTraceWriter.cs" />
     <Compile Include="Utilities\DynamicProxy.cs" />
     <Compile Include="Linq\JPath.cs" />
     <Compile Include="Linq\JRaw.cs" />
diff --git a/Src/Newtonsoft.Json/Properties/AssemblyInfo.cs b/Src/Newtonsoft.Json/Properties/AssemblyInfo.cs
index cad32025..b8960ba4 100644
--- a/Src/Newtonsoft.Json/Properties/AssemblyInfo.cs
+++ b/Src/Newtonsoft.Json/Properties/AssemblyInfo.cs
@@ -90,7 +90,7 @@ using System.Security;
 // by using the '*' as shown below:
 [assembly: AssemblyVersion("4.5.0.0")]
 #if !PocketPC
-[assembly: AssemblyFileVersion("4.5.10.15509")]
+[assembly: AssemblyFileVersion("4.5.10.15511")]
 #endif
 
 [assembly: CLSCompliant(true)]
diff --git a/Src/Newtonsoft.Json/Serialization/DiagnosticsTraceWriter.cs b/Src/Newtonsoft.Json/Serialization/DiagnosticsTraceWriter.cs
new file mode 100644
index 00000000..ea6fce9f
--- /dev/null
+++ b/Src/Newtonsoft.Json/Serialization/DiagnosticsTraceWriter.cs
@@ -0,0 +1,57 @@
+#if !(SILVERLIGHT || PORTABLE || NETFX_CORE)
+using System;
+using System.Diagnostics;
+using DiagnosticsTrace = System.Diagnostics.Trace;
+
+namespace Newtonsoft.Json.Serialization
+{
+  public class DiagnosticsTraceWriter : ITraceWriter
+  {
+    public TraceLevel LevelFilter { get; set; }
+
+    private TraceEventType GetTraceEventType(TraceLevel level)
+    {
+      switch (level)
+      {
+        case TraceLevel.Error:
+          return TraceEventType.Error;
+        case TraceLevel.Warning:
+          return TraceEventType.Warning;
+        case TraceLevel.Info:
+          return TraceEventType.Information;
+        case TraceLevel.Verbose:
+          return TraceEventType.Verbose;
+        default:
+          throw new ArgumentOutOfRangeException("level");
+      }
+    }
+
+    public void Trace(TraceLevel level, string message, Exception ex)
+    {
+      if (level == TraceLevel.Off)
+        return;
+
+      TraceEventCache eventCache = new TraceEventCache();
+      TraceEventType traceEventType = GetTraceEventType(level);
+
+      foreach (TraceListener listener in DiagnosticsTrace.Listeners)
+      {
+        if (!listener.IsThreadSafe)
+        {
+          lock (listener)
+          {
+            listener.TraceEvent(eventCache, "Newtonsoft.Json", traceEventType, 0, message);
+          }
+        }
+        else
+        {
+          listener.TraceEvent(eventCache, "Newtonsoft.Json", traceEventType, 0, message);
+        }
+
+        if (DiagnosticsTrace.AutoFlush)
+          listener.Flush();
+      }
+    }
+  }
+}
+#endif
\ No newline at end of file
diff --git a/Src/Newtonsoft.Json/Serialization/MemoryTraceWriter.cs b/Src/Newtonsoft.Json/Serialization/MemoryTraceWriter.cs
new file mode 100644
index 00000000..768684ff
--- /dev/null
+++ b/Src/Newtonsoft.Json/Serialization/MemoryTraceWriter.cs
@@ -0,0 +1,49 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Text;
+
+namespace Newtonsoft.Json.Serialization
+{
+  public class MemoryTraceWriter : ITraceWriter
+  {
+    private readonly Queue<string> _traceMessages;
+    
+    public TraceLevel LevelFilter { get; set; }
+    
+    public MemoryTraceWriter()
+    {
+      LevelFilter = TraceLevel.Verbose;
+      _traceMessages = new Queue<string>();
+    }
+
+    public void Trace(TraceLevel level, string message, Exception ex)
+    {
+      string traceMessage = DateTime.Now.ToString("yyyy'-'MM'-'dd'T'HH':'mm':'ss'.'fff") + " " + level.ToString("g") + " " + message;
+
+      if (_traceMessages.Count >= 1000)
+        _traceMessages.Dequeue();
+
+      _traceMessages.Enqueue(traceMessage);
+    }
+
+    public IEnumerable<string> GetTraceMessages()
+    {
+      return _traceMessages;
+    }
+
+    public override string ToString()
+    {
+      StringBuilder sb = new StringBuilder();
+      foreach (string traceMessage in _traceMessages)
+      {
+        if (sb.Length > 0)
+          sb.AppendLine();
+
+        sb.Append(traceMessage);
+      }
+
+      return sb.ToString();
+    }
+  }
+}
\ No newline at end of file