This may be a tad late but everyone please practice "safe computing", i.e., not downloading any attachments unless you verify with the sender that they sent it. I have daily been receiving 10-12 e-mails with attachments such as "main1930.zip" or email with the subject, "W32 Klez Removal Tools" and the attachment, "install.zip" and sundry other "zip" attachments. I suspect these are variants of Klez but I ain't willing to download it to test my anti-virus software. I would offer this suggestion, if you are not expecting it, don't accept it. No one should be upset if you question an unsolicited "zip" (or any other) file sent from their address. To paraphrase Ben Franklin, "we all hang together or we shall certainly hang separately". Good luck to all, Billy P.S. The attachment names are varied and the sizes vary also which leads me to think it may be Klez as that worm is known to add garbage to the infected file to increase it's size so as to prevent anti-virus software from easily stopping it based upon attachment name or size.