I'm at work on a different computer so I can't do anything til later on but is a boot time scan the same as scanning in safe mode,,if not, could you explain that term further,,I updated avast this morning but will try again when I get home,,I checked msconfig,,and avast isn't showing in the "start" programs area where things such as spybot ,,tea timer etc are listed,,I checked this against my wifes laptop and hers shows avast in the msconfig "start". I don't know if avast has been corrupted by this and isn't starting in time to catch this trojan,,I'll let you know how I make out later on when I'm home,,again could you explain how to do a boot time scan,,,,,,many thanks. Right now the trojan avast found is in the "chest" but I don't know if that will matter when I reboot. Avast will run but I don't think its starting right away. Like I said theres a little red dot that appears for a short time in the tray icon for avast (the little round ball if your familiar with avast) as the computer is starting,,,this never happened before and doesn't happen with my wifes laptop,,excuse me if any of the terms I use aren';t correct but I'm not very good with computers. One other thing,,could have the bad update file that I tried to install this morning that was listed in your updates have caused this,,I doubt it but just asking,,it was the first update listed that others complained wouldn't d/l. It was the,,,"base hijacker detections",,got a "badchecksum" when I tried to d/l,,again thanks