By far, it is how every system upgrade keeps turning back on the defaults for the printscreen feature. While it’s wonderful to have such an easily accessible screen capture capability, come on! The PRTSC key is just so prevalently positioned on so many keyboards, that it’s just impossible not to hit time to time. You [...]
Ubuntu
I’m only on the first public release beta right now, but one of my favorite features is turned off by default: workspaces. To turn it back on, just go to System Settings / Appearance and click the Behavior tab and check Enable workspaces.
The answer is MyUnity. If it’s not on your system already, get it from the Ubuntu Software Center. It is the “less dangerous” replacement to CompizConfig Settings Manager. Load MyUnity, and go to the desktop tab, and adjust the H Desktop and V Desktop numbers. If you’re on a dual-monitor system, let me suggest 1×3.
To upgrade from Ubuntu 12.04 to the 12.10 Apha, open a terminal window and type: “sudo do-release-upgrade -d”


