Whoa! Slow down there big guy! It's not "Mac Fanboys" who are having problems with Vista 'cause us "fanboys" use OS X exclusively.
It doesn't take much Googling to see that there are *many* people having issues with Vista. Why do you think Dell is giving 'peeps the option of installing other OS's?
If Vista is working fine for you.....great! Consider yourself one of the lucky.
I can google "Problems Vista" and get a wackload of stuff
I can google "Problems Win2k" and get a wackload of stuff
I can google "Problems WinXP" and get a wackload of stuff
I can google "Problems OSX" and get a wackload of stuff
I can google "Problems Redhat" and get a wackload of stuff
I can google "Problems Freebsd" and get a wackload of stuff
I have to support OSX, Win2k, WinXP and Vista at work and all have their quirks and none of them major or nothing a restart doesnt fix 99.9 of the time. On all windows boxes we run antivirus and since I've been there for 4 years, we have not had one virus issue so for people that complain about viruses, just throw on a free AV software and forget about it. Its not brain surgery. Computers these days have huge power and speed so whats 1% performance loss to be safe?
Anyway Vista has had no issues other than some obscure hardware that has no drivers but on boxes with drivers and hardware that are supported, it has been rock solid.
PS. Considering that the installed mac user base using OSX might be less than 5% of people on the net (I'm taking a stab guessing) and the amount of stuff I do find in terms of problems and posts, I'd say its looking like OSX has more issues overall. Cant say for sure but it looks that way.