I guess I'm one of those white sheep among goats too (great imagery- ahahha).
Funnily enough, my dad was having problems (for the second or third time in the past thirty days) with updates to Norton Antivirus on his Dell tower. He told me that he was re-installing Norton because it wasn't working (he reinstalled it less than a month ago!). I told him if he had a Mac he wouldn't have to worry about it. That said, I never had problems with updates with my Norton Antivirus on my old Dell tower, so maybe he just has bad luck with computers.
In the end though, he needs a wintel machine, as, despite MS's (and lots of reviewers) claims, Office 2K4 for OS X doesn't quite transfer all files over to PC adequately. Specifically, transferring Powerpoint files from MAC to PC is an exercise in futility (just plan on spending alot of time fixing display problems as precise positioning of graphics and stuff gets screwed up). So I don't think I'll be able to get him to switch anytime soon. He'll just have to continue installing Norton every other week and complaining about spyware.... <sigh>.