Link to good articles
Debugging OutOfMemoryExceptions in managed code using Windbg
http://blogs.msdn.com/amolravande/archive/2008/12/16/debugging-outofmemoryexceptions-in-managed-code-using-windbg.aspx
Query Data with Parallel LINQ
http://blogs.msdn.com/charlie/archive/2008/12/15/query-data-with-parallel-linq.aspx