TraceSource Occasionally Throws AccessViolationException

Question

In our application occasionally a TraceSource will throw the following exception. What would cause this and how can I diagnose it? I'm unable to catch the exception and adding the HandleProcessCorruptedStateExceptionsAttribute to the method also does not allow me to catch it.

Unhandled Exception: System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
at Microsoft.Win32.Win32Native.WriteFile(SafeFileHandle handle, Byte* bytes, Int32 numBytesToWrite, Int32& numBytesWritten, IntPtr mustBeZero)
at System.Text.EncoderNLS.GetBytes(Char[] chars, Int32 charIndex, Int32 charCount, Byte[] bytes, Int32 byteIndex, Boolean flush)
at System.IO.StreamWriter.Flush(Boolean flushStream, Boolean flushEncoder)
at System.IO.StreamWriter.Write(Char[] buffer, Int32 index, Int32 count)
at System.IO.TextWriter.SyncTextWriter.WriteLine(String value)
at System.Diagnostics.TextWriterTraceListener.WriteLine(String message)
at System.Diagnostics.TraceListener.TraceEvent(TraceEventCache eventCache, String source, TraceEventType eventType, Int32 id, String format, Object[] args)
at System.Diagnostics.TraceSource.TraceEvent(TraceEventType eventType, Int32 id, String format, Object[] args)