switching ESC and CAP LOCK in xcfe

[Alberto Fuentes <afuentes@qindel.com>]

i have this ~/.Xmodmap [0] to switch CAP LOCK and ESC but its not 
executed when login into xfce :S

Also, I execute manually with xmodmap ~/.Xmodmap but it switch back to 
orinal conf within a random period of time and im not sure why...

Im running latest wheezy

Thank you!

[0]
$ cat .Xmodmap
! Swap caps lock and escape
remove Lock = Caps_Lock
keysym Escape = Caps_Lock
keysym Caps_Lock = Escape
add Lock = Caps_Lock