It seems caused by windows live sign-in assistant. I had exact same problem.
http://social.technet.microsoft.com/Forums/en/w7itpronetworking/thread/9c6f1d74-f7f0-4503-94fa-0d79a5597527
It seems caused by windows live sign-in assistant. I had exact same problem.
http:// social. technet. microsoft. com/Forums/ en/w7itpronetwo rking/thread/ 9c6f1d74- f7f0-4503- 94fa-0d79a55975 27