I've been using AVG for a bout a year now, and my friends at the computer store have been using it longer. It sounds more like you have a corrupted file or a bad install.
Originally posted by ArMaP
I have never had a problem with AVG, and I have been using it for some 7 years. I have it installed in at least 6 computers with which I work.
When I installed Windows Vista on my computer (at the time was still the Beta version) AVG didn't work with Vista, so I changed to Avast! and I am happy with it, I now recommend Avast!.