Sorry about this repeat topic, but I really want to know which one is better, among AVG free which is my current av soft, AVAST (never tried), and free-av (my previous av soft), I'm using AVG right now, it seems work pretty good, but after installed this one I never found any craps on my system, normally, there were some viruses found every month when I used free-av, now I wonder if my system is really OK or AVG is not that good as I expect.