In a recent test of Virus Scanners in a magazine, it was shown that Norton still ships an CD-ROM with a bootable DOS system - with signatures from the turn of the Millennium.
And no way to update them.

I guess they've just forgotten it.

When you find a big kettle of crazy, it's best not to stir it.
--Dilbert cartoon

"Interplay.some zombiefied unlife thing going on there" - skavenhorde at RPGWatch