task sched. error after windows sp1

I found another problem after I installed sp1. I hope someone may have some information.
When you go to your control panel, computer management and click on system tools you get a list of things to check. When I click on task scheduler I get an error box that says "The task image has been corrupt or has been tampered with, user_feed_synchronization (28F3DCE7-A254-4CAE-8E6B-9BA1372F14E5). Maybe someone knows what all that means and can help me fix it??