I have just upgraded from Kubuntu 12.04 to 12.10.
Until now, I was using AltGr+PrintScreen+K key combination to restart the X Server.
After the last upgrade this shortcut doesn't work anymore.
Do you know if there is any new key combination to restart the X Server?
An online search did not return any obvious results as 12.10 is not very popular since it hasn't been released yet.