You are using System Center Operations Manager 2007? You installed SP1? Great, it's a nice piece of software.

However, one thing you might have noticed is that SCOM SP1 is generating a large ammount of Alerts on "Performance Module could not find a performance counter". A quick search on the net takes you to Ops Mgr Product Team Blog, where you are adviced to disable the alerting rule. 

This is working just fine, but as with any workaround, it should be fixed - Microsoft released KB951979 for SP1, in which this and a view other errors are fixed for good (see list below).

Unfortunately, the original article on the Ops Mgr Product Team Blog was not updated to reflect this change.

Errors fixed in this package: More...