False "Win32:Passma [Wrm]"warnings

??? Hi guys today when i updated the virus defnitions, avast suddenly started showing virus warnings against “firefox”, “opera” and many other files which i am sure donot contain viruses. i am unable to open them. Some one please help! ???

what windows are you running , XP?

Thank u for ur comments guys. It turned out that my computer was indeed infected. I just now formated my whole hdd and reinstalled OS. No no prob. Thanx again

Can you post the full name and path of the executables files? “firefox”, “opera” and many other files…
It does not seem false positives but real infections…
Can’t you scan and clean your system without installing windows again?