[xmonad] Keyboard and mouse dying

Hi, When using xmonad, sometimes my mouse and keyboard stop answering, to the point that I have to reboot the computer. Does anyone had the same experience? I first thought that it could be a hardware problem, but when I use gnome nothing wrong happens. Here 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)))} ----- Thanks, Maurício