ratbastid

I agree, probably one of your two card-programming buddies has the virus and it's latched onto your address to spoof in the "From" field. It's then trying to send mail to somebody else in their address book (which is probably loaded with card-programming folks), which is failing because of who knows why, and bouncing back to you.

This happens a lot with email viruses--they circulate in pockets of community. I was getting it from the other resellers of the hosting service I resell. I heard about very specific pockets of people passing it back and forth. Scientists at distant universities who are researchers in the same field, for instance. It'd be sort of an interesting social connectivity experiment, if it weren't so damn annoying.

What the hell, though. Post some headers, we'll take a look and see if it looks more suspicious than that.