On the avast! console, it says the current version of my virus DB is 0639-1, 09/25/06. I’m using version 4.7.892 (Build: Oct2006) on XP SP2, if that matters at all.
Can you try to do a program repair: Go to Add/Remove Programs → avast! antivirus → Repair (you need to have active internet connection to do the repair) and then restart
I assume you have tried MANUALLY Updating the Definition
Files by RIGHT- clicking on the Avast icon in the System
Tray, selecting “Updating”, then “AVS Update” !?