I was using avast! earlier when I had this annoying brontok trojan. It (avast1)keep deleting the infected files but never got rid of it. After complete scanning, the trojan came back, over and over again...I had enough, downloaded AVG and my problems had disappeard....

Actually I had used AVG but also problems in cleaning a certain virus which avast! managed to clean!

I'll wait for the next 'cycle'...