I just bought Norton Internet Security the other day and I ran the virus scan. Too my surpise I had 4, thats right 4 windows based trojans running on my Macintosh. I do have Virtual PC but I dont surf the internet on it. I also only ran it a few times because it ran so slowly even on my Dual 2.5 GHz PowerMac. I dont know how this could of gotten on their. I did clean it and get rid of them but I dont have any explnations for it, whatsoever.