nah, I run PT on a PC. No problems with the program itself. And in fact, I don't think I've had any OS problems in quite awhile. I think the reason people usually like PC over Mac is OS issues...and familiarity. PC's I find are just much more "tweakable" and a lot cheaper. I just know PC's better, so i prefer to stick with it. Plus...all the other (video) computers at our studio are PC's, so I prefer to stay at least a LITTLE compatible.