Comment #1 on issue 283 by Braden.Shepherdson: Xmonad hangs up often http://code.google.com/p/xmonad/issues/detail?id=283 This is almost certainly the xmobar pipe bug. Your xmonad is sending data to xmobar, but if xmobar isn't displaying the information using a StdinReader, the pipe will gradually fill up. When it's full, xmonad will block trying to write to it, resulting in this freeze. Either add the StdinReader to your xmobar template, or change your xmonad logHook to stop sending data to xmobar. -- You received this message because you are listed in the owner or CC fields of this issue, or because you starred this issue. You may adjust your issue notification preferences at: http://code.google.com/hosting/settings