I had that problem too. I had to get on the phone to Symantic to get rid of it, and even after that, I found another part or two of it. Good luck. (I really hate those people!)
Go to Giant software, This is a new company Microsoft purchased. You can ge a free download and it cleans up alot of crap.
i think most people know that AVG is better than norton by far
anyways im downloading spybot..hopefully it fixes this thing