If you use the management tools that are dependent upon WMI (such as posdm.exe), the WMI namespaces may need to be recreated after significant OS updates (such as applying SP3).  A temporary fix, can be done by choosing the repair option from the installer; however, the recommended fix, in order to avoid future reoccurrences, is to use mofcomp as described in the attached document.

   - Sylvester