There is a new beta out of Ubuntu: 9.10. I am waiting for the actual release before upgrading my system. I read the release notes and came across this ‘Known Issue’:

Ctrl-Alt-Backspace is now disabled, to reduce issues experienced by users who accidentally trigger the key combo. Users who do want this function can enable it in their xorg.conf, or via the command dontzap –disable.

I don’t like this feature. Ctrl-Alt-Backspace has saved be a lot of times before and I will definitely turn this feature off.

For people that want to get to know Ubuntu there is a free guide.