Artful Dodger: I haven't tried Avast. What I found annoying about Avira was the advertisement window that popped up on every update. I like my AVG, but I am only really happy with it since I have more than one CPU core.
(hide) If all of a sudden the site shows up in a different language, just click the flag for your language and it will be back to normal. (pauloaguia) (show all tips)