> does anyone know how to lock up X in a really secure way? I have to
> leave my office many time a day and i use xlock to lock my wm but one
> can do crtl+alt+backspace to kill the x server or use crtl+alt+f[1-4] to
> change to console. 

You could turn the tty's off in /etc/ttys to make crtl+alt+f[1-4] useless.
(assuming you're usig [gkx]dm).

Ben
  __
 (oO)  Why vote for the lesser of two evils?  Cthulhu for president.
 /||\