Coincident to this thread on OS X viruses, I have a related problem. For a few months, on my OS9.1 machine(PowerCenter 150/G3) I noticed an extension named "[space] 666". Fearing I had inadvertantly renamed a good extension, I did not remove it. I recently read on another list that this extension indicates the presence of the Sevendust virus: see < http://securityresponse.symantec.com/avcenter/venc/data/mac-sevendust.html>. I removed the extension; it kept reappearing so I searched the HD for invisible files using File Buddy, and found some unknown prefs which I removed...this prevented the 666 extension from reappearing. I then ran Norton AV 7 on the HD and recently-used removeable disks, and it found various apps infected with Sevendust A/B, which it repaired. Looks like everything's fine now. However...now for the more on-topic part: I found the 666 extension in the Classic System Folder on my iMac G4 15in. Flat Panel(10.4.3), probably due to my having shared infected zip disks. I succeeded in removing the extension and preventing its reappearance(I think). My question: If I boot into Classic and run Norton AV 7 on the HD, will it be harmful to OS X files or any system resources? As an X-newbie, I just want to check with you all before running this old Norton AV. Thanks for your feedback! Saul Broudy Philadelphia, PA USA -------------- next part -------------- An HTML attachment was scrubbed... URL: http://listserver.themacintoshguy.com/pipermail/x-newbies/attachments/20060218/38e981a8/attachment.html