Another variant, Mydoom.f is being reported.
This one "can also delete image, movie, Excel and Word files on an infected machine".

http://us.mcafee.com/virusInfo/defau...01038&cid=9674


A variant of the original Mydoom virus, W32/Mydoom.f-at-MM is a Medium Risk mass-mailing worm that can open up hacker backdoors on infected systems and launch denial-of-service attacks that target www.microsoft.com and www.riaa.com domains.

Note: Unlike previous versions of Mydoom, Mydoom.f can also delete image, movie, Excel and Word files on an infected machine.

Like other mass-mailing viruses, W32/Mydoom.f-at-MM steals email addresses from an infected machine, then mails itself to other computers, often spoofing the "from field." The worm arrives with random subject lines, such as "Please read," "Something for you" or "Please reply". The body of the e-mail contains an executable file often disguised as a text file.
Stinger has been updated to assist in detecting and repairing this threat.

http://vil.nai.com/vil/stinger