I have never received any of this crap before, but sadly my .Mac account just received 123 of these messages. Makes me want to strangle Windows users that have my e-mail address in their address book. That's the only way I could have started getting this junk.
Hope it goes away soon or Apple figures out a way to start blocking users from even getting it. I can see how Windows users can fall for this stuff. The email does look like it comes from MS, but most computer literate people will see right through it though.