Improved LINQ query perfomance with CompiedQuery

http://www.codeproject.com/articles/38174/how-to-improve-your-linq-query-performance-by-5-x

http://www.albahari.com/nutshell/speedinguplinqtosql.aspx

http://weblogs.asp.net/wesleybakker/archive/2009/07/30/how-to-make-a-linq-to-sql-query-twice-as-fast.aspx

http://petemontgomery.wordpress.com/2008/08/07/caching-the-results-of-linq-queries/

http://remyblok.tweakblogs.net/blog/7660/caching-deferred-executed-linq-query.html