I've switched from AVG Free to Bitdefender when I had a new PC built - Bitdefender total security 2010 - after reading comparisons and due diligence. I'm happy so far, except there doesn't appear to be an option to have the PC automatically shut down after a scheduled scan where no infection was found. I liked this amenity in AVG and wonder why it either doesn't exist in BD2010 or can't be found.