Yep, going to remove the svc pack. I found this on the web:

"A change to the Kernel Patch Protection ("PatchGuard") feature in the Vista kernel that prevents security companies like McAfee and Symantec from integrating as tightly with the OS as they could in previous Windows versions. This will include a set of APIs aimed at helping developers write code that interacts with this security feature."

So I'll see if that is the glitch.