I use Ubuntu as my primary OS now with XP (for Team fortress 2) on a dual boot.
I can't believe how good it is... USB wireless apart I've come across no real problems.. they eye candy in gutsy is better than Vista.
I tried Linux a few years ago and found the learning curve to be beyond me, but ubuntu works straight out of the box and sure you have to bugger about sometimes to get things installed but thats how computers used to be and you learn something new every day.
Computing is fun again.
