I was right. F-Prot just included a fix for MSBlaster as of today. This virus has been causing grief here since Aug 8. Here's a direct quote from F-Prot. Users of F-Prot Antivirus should update their virus signature files immediately. W32/Msblast.C is detected by F-Prot Antivirus using virus signature files dated 13 August 2003 and later. Gerry