It's a shame, because Ubuntu was soooo close to surpassing Windows from a "I just want to get stuff done without mucking with the machine" standpoint. But then Windows got much better with version 7 and Ubuntu took a nosedive into crazy UI fantasy land.
The final straw was when text started randomly disappearing and reappearing in emacs and xterms in Unity. I don't know why it happened, just that it was too much trouble to diagnose some weird bug for the millionth time. If I can't trust my desktop to run emacs(!) without glitching, see ya.
I'm getting older, and after about 15 years playing around with config files, I just want something that's stable and consistent, and OS X was never to my taste. Windows is leaps and bounds better than when I heavily used it last.
And Linux runs fine using Xfce in a VM where you can count on the host to have all the hardware working.