I am using xmonad on a tablet PC where I sometimes change the screen orientation. Unfortunately, Xmobar doesn't properly rescale itself when the screen goes from portrait to landscape. If I kill it and then restart, the new Xmobar instance doesn't communicate with the Xmonad LogHook anymore. The only solution for me right now is restarting Xmonad, which is suboptimal because (1) config takes noticeable time to compile and (2) my workspace / window configuration gets completely fubared on every Xmonad restart (e.g. all the terminal windows like to move themselves to a single workspace even though there isn't a doShift directive to do so in the config (it might have something to do with my using compositing). If anyone has advice on how to reset Xmobar without Xmonad restart (or at least how to make the Xmonad restart not touch my window config), I'd love to hear it! --Leo