This seems to be a common problem with AVG8. Problems with the link scanner as well. Removing it is a bit of a pain also.
Revo will remove it, and many here seem to be using Avast instead.
I know free is nice, but you do (as I know I've said before) isn't alway's best. Many antivirus products on the market to choose from, but I do prefer to buy one.
Use it to remove AVG, and then I guess make your choice :)