Avast False Positive:

Avast is having a bad day. Seems its recent virus definition update started triggering all sort of false positives – incorrectly identifying good programs as malware. SANS Internet Storm Center puts it this way:

We have received a number of reports of Avast Antivirus false positives (Thanks Ken, Don, Luca & others). With a recent update the Avast antivirus product have started identifying legitimate products as containing Win32-Dell-MZG. The Avast forum is awash with some of the products that have been tagged, many of which are known to be good and have been functioning quite normally.

The recommendation at the moment is to not reply delete or quarantine files as this may fry the product they belong to (a few readers are currently reinstalling applications). As far as we know the files are consistently identified as Win32-Dell-MZG so if others pop up there is a fair chance that these are legit.