driver sizes and stuff
Got an HP scanner. Installed it under XP, it copied the entire contents of the cd that came with it, and I had all sorts of image gallery manager craplications installed, with no option not to.
Under ubuntu linux, I apt-get'ed one file.
and @ David re: Mac security, I have played with OSX 10.1 - 10.4 and not seen this problem (root acces from a terminal) in any of them, as others have said you either have to activate the root account through the preferences or 'sudo passwd' at the terminal. A password being not set is not the same thing as it existing, and being blank.
It's fallen somewhat recently, but at one point something like 70% (IIRC) of web servers were running linux. So, yeah, thats a really obscure, out of the way OS, not of interest to hackers or security researchers.
I'm curious when hardware manufacturers are going to spit the dummy with all the hoops thy're being asked to jump through for DRM this and trusted computing that, and just say 'fuck it, our hardware is not windows compatible'.