Its a hell of a problem. 90-95% of my downloaded files do not open! They read as limewire documents, and resist conversion by stuffit, quicktime, everything! This happens no matter what the file type: .mp3, .sit, .mpeg--you name it, it doesn't work.

I know it is not a hardware issue. This mac is nominal and all software and os are current (OS 9.2).

Anybody know why this happens and what can be done about it? I'd hate to go back to mactella, but I will until this gets sorted out.