http://msdn.microsoft.com/en-us/magazine/cc163675.aspx
http://support.microsoft.com/kb/303247
http://social.msdn.microsoft.com/Forums/zh-CN/asmxandxml/thread/ec6cc6f3-f29a-4783-bc11-3c2a46ea618b
http://www.cnblogs.com/lerit/archive/2010/10/22/1858007.html