extract some of the files to ur desktop and upload them to virustotal.com to see if they are false positives. A few days ago i had to send some false positives to avast that were detected as Win32: Nimosw as well. There are even a few more that are still being scanned as infected and i know they are false positives but i have yet to have sent them in yet because i have to transfer the files from my vista computer to my xp computer in order to send them to virus@avast.com in a password protected zip (and i’m a lil lazy…lol).
They might not be false positives, but i’ve had a ton of files just recently being identified by avast as harmful and containing win32:nimosw and i know they are false positives (i uploaded them to virustotal), so maybe there is a problem with their detection of this virus.