The only time I ever hit the Caps Lock key is by accident. When I do it messes up everything that I'm working on and I have to go back and fix things. Same thing with Num Lock! If you use these quick xmodmap commands you can disable those keys and avoid some headaches.

# Disable: Capslock, Numlock
xmodmap -e "keycode 66 ="
xmodmap -e "keycode 77 ="