Well, just like budweiser, I signed up regarding this issue too. After some considerable research (about 10 minutes anyway), according to all the major AV software companies, it isn't a major threat.....however, I'd rather not take the chance. Depending on your AV, it is either known as W32.Alcra or W32/Alcan.worm!p2p. I have found it amongst 3 of my downloaded files, and they all had one thing in common, all 3 files were EXACTLY 851.7Kb in size, and all were .zip files. As far as music goes, I've had no problems.