After checking the issue, it seems this is a general Windows system issue. As this forum focuses on SteadyState specific issues, this inquiry would best be posted to Windows Vista or Windows XP forum:
http://social.technet.microsoft.com/Forums/en/category/windowsxpitpro
http://social.technet.microsoft.com/Forums/en/category/windowsvistaitpro
The reason why we recommend posting appropriately is you will get the most qualified pool of respondents, and other partners who read the forums regularly can either share their knowledge or learn from your interaction with us. Thank you for your understanding.
Also, for your information, I'd like to include the following articles regarding the issue:
http://social.microsoft.com/forums/en-US/windowssteadystate/thread/889447df-8452-44b4-bcdf-bf217b75ce6f/
Sean Zhu - MSFT