Over the past two days, I've gotten hundreds of "Undeliverable Mail" messages. A lot of the e-mails have this as the reason that the e-mails weren't delivered: "You appear to be sending this server emails infected with the KLEZ worm. Please update your virus software, or if you feel as though you have received this message in error, please contact your support desk." I thought that I actually might have the virus even though my checker is updated very regularly. I went through all of the messages, and none of the addresses that mails are being returned from are people that I know or have sent e-mails to before.