Avast and CCleaner are compatible, I myself use both as well as a few other forum regulars and nothing about incompatibilities has ever been brought up to my knowledge. Since Avast is picking up a Trojan only when running CCleaner it's probably because CCleaner is attempting to delete the Trojan from the browser cache which causes Avast to scan it (any antivirus' real-time protection is going to scan everything that's in the CCleaner Cleaner window) thus trigger something.
I got rid of AVG Free because I had problems and Avast found them immediately when I ran it. So will not download that again.
If you've already had an infection recently it may be worth posting a HijackThis log as Andavari suggested anyway just to make sure there's no leftovers.
Are you still getting this AV warning when runing CCleaner with Avast running? (or did running it once with Avast off fix it)
If you've already had an infection recently it may be worth posting a HijackThis log as Andavari suggested anyway just to make sure there's no leftovers.
Are you still getting this AV warning when runing CCleaner with Avast running? (or did running it once with Avast off fix it)
Yes ran cleaner last night with Avast on and got another warning about win.32:AGENT-GY (TRJ) and put in into my virus chest.
This is a hot topic over on the avast forum. So far it has 13 pages. The link is this http://forum.avast.com/index.php?topic=28377.0 . Many users WITHOUT true infections are reporting false positives while cleaning with CCleaner (including me). Avast! has somewhat solved the problem and the Win32:Agent-"G" series trojans which were detected while scanning with CCleaner are now seen as containing "no virus" in the virus chest. Avast! has yet to fix the problem with the false Win32:Agent-HAI [Trj] trojans being detected while scanning with CCleaner. I'm not sure which company is to blame, maybe both, but I hope that something gets worked out between the two companies instead of these false positives continuing.