Sobig, Soannoying

I'd thought maybe it was fading away when I didn't see any copies for the better part of a week, but there have been dozens of mailings of the Sobig.F worm in my inbox in the last 24 hours or so. Geez, people, how hard is it not to spread stuff like this? Update your damn anti-virus software and, for heaven's sake, don't click on the attachments! Who does not know this by now?