In short: I've thrown a script together that executes the xmodmap command needed to completely disable to numlock key. What this script does is make sure that xmonad is up and running _before_ xmodmap is called. Combined with Adam's addition to my handleEventHook in xmonad.hs I've now managed to squash the numlock key into oblivion. Mission accomplished! I can't say I like this solution, but at least it gets the job done. I would still very much prefer if this could've been fixed in xmonad.hs, or if xmonad would just let me do my xmodmap'ing without destroying my mod key, but as that does not seem to be possible, I'll settle for second best. So if anybody else out there is having this problem, a bit of BASH will solve it. Just make sure you have this in your handleEventHook: ( \e -> case e of MappingNotifyEvent {} -> return (All False) _ -> mempty) and that your xmodmap calls are done _after_ xmonad is fully loaded. I call my script from .xinitrc just before I start xmonad. The script is backgrounded and it simply loops until it finds a running xmonad instance. :o) Thomas Løcke