Where I come from they sell 'em!
I have received something Norton identifies as objectionable 12 times in the last three weeks, nothing for 10 days.
I don't know if they were Klez or not, usually a .exe file with a message from someone telling me that they just wrote a game, and I, lucky me, Bowser, had been selected to be the first to try it.
A friend on the East Coast started getting it about a week after I did, and only got it 4 or 5 times.
Having got the Love Bug, and barely saving my hard drive, I don't open attachments. Just don't do it.
It was nice of you to warn the folks that don't have Norton, though. And I'm sure the other work, also.
Arf
