W32/Jeefo is a six year old virus. There is no excuse for having it on your computer except complete and utter incompetence.
All it took was not scanning one zip file I downloaded.

A collection of old, out-of-print games. Only one contained the virus, so I figure it wasn't a purposeful spread of the virus.
Actually, it's the old-style viruses I'm susceptible to. I haven't found a free antivirus that balances effectiveness with performance, so I don't use one. Once BitDefender expires (I want to punch whoever wrote the program in the face, and buy a drink for whoever makes the disinfection routines) I'll have a look at ThreatFire. Sitting behind a firewalled router and Firefox with NoScript keeps out all the "active" viruses, but ones like Jeefo can still get in.
Wasn't a "oh crap guys, watch out for this virus!" as much as "this thing was a pain and viruses can have any payload they desire. Watch out for this kind."