After trying to upgrade gnome on my iBook running gentoo, I found myself waiting a few hours for it to compile everything. And then, when reopening my session, nothing worked anymore (nautilus dying, applets dying, …). As the only other Linux PPC CD I have at home is a really out of date Debian (realize how old stuff is on this thing!), I found myself forced to reinstall Mac OS X to get work done.
Well, I’m quite happy I did this: at least it Just Works – and this Expose stuff is really nice!
Update: Ok, just kidding! Who fell for it ? ;-)