In Ubuntu 13.04 it was possible to disable the Caps Lock Key. It was also possible to make the key sequence Ctrl - Alt - Backspace to kill the X-server.
That was all done using System Settings -> Keyboard Layout -> Options.
Keyboard Layout in 13.04 is called Text Entry in 13.10. But the options are no longer available. Where have they gone?
doncf-editor
, see (Switch caps lock and escape) [http://askubuntu.com/questions/363346/how-to-permanently-switch-caps-lock-and-esc/365701#365701] – chaskes Oct 25 '13 at 16:24