After successfully installing maple 11 on my computer running Ubuntu I start maple by executing the xmaple command. That will give the splash screen and later start a window which is just grey with no menu bars. In the end the startup tip dialog appears and when I select anything from there it disappears and nothing happens after that. The window stays gray. If I press the location of the window where the menu bar should be (also press F10) I get the menu items. Selecting any of them, like options, will invoke a dialog which is fine but there is nothing happening when opening a file or wanting to run an example or such.