When you access some shared files from a computer that is running Windows Server 2008 or Windows Vista, the computer stops responding under a heavy stress situation. Additionally, the computer does not recover until you force the computer to restart.
This issue occurs because of a deadlock between the memory manager and the Redirected Drive Buffering SubSystem (Rdbss.sys) driver.
This hotfix is included in the hotfix of the Knowledge Base (KB) article 976674. Follow the steps in the KB article 976674 to resolve this issue.
976674 The computer stops responding when you access some shared files from a computer that is running Windows Server 2008 or Windows Vista
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates