When forcing a group policy update I get the following messgae, but only on 32bit windows machines. 64bit works fine. Running windows 7.
The processing of Group Policy failed. Windows could not evaluate the Windows Management Instrumentation (WMI) filter for the Group Policy object (GPO) %8. This could be caused by RSoP being disabled or Windows Management Instrumentation (WMI) service being disabled or stopped, or other WMI errors.
http://technet.microsoft.com/en-us/library/dd392547%28v=ws.10%29.aspx