Since installing Ubuntu 10.04 on my laptop, I wasn't sure why I could never get Xorg to restart by holding down CTRL+ALT+BACKSPACE. Now, thanks to a blog post at TrueTech, I've learned how to make CTRL+ALT+BACKSPACE work in Ubuntu.

Basically, the keybinding to restart X has changed in Ubuntu and for those of us who are used to the old keybinding, there is a way to change it (posted at the link above).