I've just upgraded to the latest xmonad in darcs, and it's great! However, one thing that used to work doesn't work anymore. I bind mod-button3 to the kill command, and when I put the cursor on a tab and hit mod-button3 the entire X server crashes! When I do it outside of a tab it works fine. FWIW the relevant part of my Config.hs is: -- | -- default actions bound to mouse events -- mouseBindings :: M.Map (KeyMask, Button) (Window -> X ()) mouseBindings = M.fromList $ -- mod-button1 %! Set the window to floating mode and move by dragging [ ((modMask, button1), (\w -> focus w >> mouseMoveWindow w)) -- mod-button2 %! Set the window to floating mode and resize by dragging , ((modMask, button2), (\w -> focus w >> mouseResizeWindow w)) -- mod-button3 %! Kill a window , ((modMask, button3), (\_ -> kill)) -- Extension-provided mouse bindings ] Anybody have any idea what's going wrong? TIA, Mike