I have a problem in UbuntuGNOME 13.10 which I didn't had in prior
releases: I did a clean install and I don't know if it was already there
or if I may have changed something, but my "Control L" and "Caps Lock"
keys are swapped. How to swap them back? See also the attached image.

http://i.imgur.com/PR1YB4T.jpg

I swapped them back using the following, but this is obviously not a proper fix:

$ cd ~

$ echo "keycode  66 = Control_L NoSymbol Control_L

remove Lock = Caps_Lock

remove Control = Control_L

keysym Control_L = Caps_Lock

keysym Caps_Lock = Control_L

add Lock = Caps_Lock

add Control = Control_L" >> .Xmodmap

$ xmodmap .Xmodmap

but the "Keyboard Layout Chart" program shows the keys still swapped. What's the reason for this? How to fix?