SCOM 2007: The CPU percentage Utilization monitors do not work on a Windows 2003 server

I was always wondering why I never recieved any CPU alerts. This is why

Cause:

The CPU percentage Utilization monitors are targeted to the Windows server 2003 processor class. However, there is no available Windows server 2003 processor class instance by default, due to the corresponding discovery rule: Discover Windows CPUs is disabled by default.

Resolution:

1. In MOM operations Console, open Authoring -> Management Pack Objects -> Objects Discoveries.
2. Search for the discovery rule “Discover Windows CPUs”.
3. In the properties window of this rule, go to Overrides. Set overrides on all Windows server 2003 operations system role type objects. Check override on the Parameter named “Enable”.4. Save the override setting.5. When the “Windows server 2003 processor” is working, the CPU percentage Utilization monitors will also work.

http://support.microsoft.com/kb/948097