Restart X
Introduction
To restart X, there aren't 36 solutions, but there is one in particular that I really like.
Solution
It's a keyboard shortcut:
This avoids having to type, for example:
That's it, X restarts :-). Warning, this should only be done while in X, otherwise the PC will reboot :-(.
Problem starting from Ubuntu 9.04
Here's what you can read:
How annoying! To reactivate it:
Then: