I received three virus alerts from Symantec (Norton)...

WARNING: W32.Sobig.F@mm
Threat level: Category 3, Moderate (scale of 1-5)
Type: Worm
Virus Definitions: August 19, 2003 or later (via LiveUpdate)

WARNING: W32.Welchia.Worm
Threat level: Category 4, Severe (scale of 1-5)
Type: Worm
Virus Definitions: August 18, 2003 or later (via LiveUpdate)

WARNING: W32.Dumaru@mm
Threat level: Category 3, Moderate (scale of 1-5)
Type: Worm
Virus Definitions: August 18, 2003 or later (via LiveUpdate)