System Center Operations Manager 2007 R2 Admin ResKit Released!

The System Center Operations Manager 2007 R2 Administration Resource Kit includes three tools designed to help improve the Operations Manager Administrator experience. Included: Schedule Maintenance Mode, Clean mom and MP Event Analyzer.

More Info:

http://blogs.technet.com/b/momteam/archive/2011/06/03/system-center-operations-manager-2007-r2-admin-reskit-released.aspx

Troubleshooting Greyed Agents, Operations Manager 2007

The Health Service does not process configuration files, and events 7022 and 1220 are logged every 30 minutes on a domain controller on which you installed the Operations Manager 2007 agent:
http://support.microsoft.com/kb/946428

Troubleshooting gray agent states in System Center Operations Manager 2007 and System Center Essentials:
http://support.microsoft.com/kb/2288515