I'm now using Ubuntu 13.04 Raring Ringtail as my main system having done a new install from Ubuntu 12.04 a couple of days ago. Its been an interesting experience... Gaming is working better Screencasts are looking much better, and I'm able to record without the Unity flickers. But the version of Nautilus was so bad that I had to downgrade to old version 3.4.2. The theme was Com-Solancer-Ambiance: http://solancer.blogspot.co.uk/2013/04/dark-ambiance-theme-for-ubuntu-1210.html Wallpaper: http://imgur.com/egxxpTv