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A hotfix is available for Windows Management Instrumentation (WMI) in Microsoft Windows Server 2003. This hotfix improves the stability of the WMI repository. The hotfix includes many of the improvements that are available in WMI in Windows Vista.

The WMI improvements that Windows Vista includes have been ported to Windows XP and to Microsoft Windows Server 2003. You can use the hotfix that is mentioned in this article to improve the stability of the repository on computers that are running Windows Server 2003. This hotfix helps increase the probability that the repository remains stable if you experience an unexpected problem in Windows.

http://support.microsoft.com/kb/933061
Note : You will need to restart the computer after you apply this hotfix

For more information about a version of this hotfix for 32-bit versions of Windows XP : 933062  (http://support.microsoft.com/kb/933062/ ) A hotfix is available that improves the stability of the Windows Management Instrumentation repository in Windows XP