I've gotten over 500 emails from the Sobig.F virus. It sucks, especially since dial up here is around 4800 baud.
"Initial analysis would suggest that Sobig.F is a mass-e-mailing virus that is spreading very vigorously. Sobig.F appears to be polymorphic in nature. The address is also spoofed and may not indicate the true identity of the sender," a MessageLabs statement said. The sender appears to be someone from a recognized domain name, such as ibm.com, zdnet.com or microsoft.com. The subject line typically says "Re: Details," "Resume" or "Thank you."