can someone explain this one to me?

[Eric H.]

OK, my boss's computer had a few viruses on it. I installed norton 2002 in windows, with unupdated virus defs, then rebooted to DOS and ran navdx. found and repaired viruses galore.

I previously went home and made a 8 disk rescue disk set, with norton 2001 and the latest up to date virus defs. I used them in the infected PC at work, and it didn't find a single virus.

***?

[Dan]

I don't have an explanation, but I have experienced something similar. I took an older pc in trade for a new system. When I ran Norton 2001, it found only one virus and removed it (no updates)...when I still suspected there were more onboard, and because the system had no modem or network card to get updates, I uninstalled 2001 and put 2002 on it...found 16 more viruses....
go figure...maybe 2002 comes with more recent or updated virus definitions. I'd be curious what anyone else has to say.....

[Byte 2.0]

it only makes sense that the new verisons are going to find more. If they updated the older versions as much no one would buy the new one, they would just update the old one. They want to make money, Period

[TwoRails]

Which, is indeed, the reason why I upgrade instead of "renewing" the AV subscription. Buying OEM versions is usually cheaper or about the same price, anyway.

TwoRails

[GaryRouth]

The newer versions of most major antivirus titles have updated the "scanner engine" as well as the definitions. Since the nasties have a way of figuring out and avoiding the good doctors. Rather like real life, eh?
. . . Gary