I have received about 12 of these e-mails, all from different sources. I know better than to open them but my question is this:
out of the 12 that I have received, I only recognized 1 sender. I don't have a clue who the other 11 are. If I have never received an e-mail from any of these 11 (except for the virus), why would I be in their address book? Could this virus be picking up addresses from somewhere else or is it maybe just dispicable people picking up addresses off of the net and mailing the virus to anyone?
If you are on a mail list for some group or other, and anyone has received a message posted by you to the mail list but not read it, it will be sent out. It sends the worm (it's a worm and trojan horse, not a virus) to all the unread messages in Outlook.