[xmonad] Problem with accessibility

Hi, I use mouse keyboard control (i.e., I press Alt-Shift-NumLock and then I can use the numeric pad to control the mouse). However, when using xmonad, I loose that control at random times. I've confirmed that this seems to be a problem with xmonad, since in metacity it works well. This is my xmonad.hs: ---------------- import XMonad import XMonad.Layout.Grid main = xmonad $ defaultConfig {borderWidth=11, modMask=mod4Mask, normalBorderColor="#00ff00", focusFollowsMouse=False, layoutHook =((Tall 0 (1/100) (1/2)) ||| (Tall 1 (1/100) (9/10)))} ---------------- What do you think may be the reason for that? Thanks, Maurício