What you're seeing there is a bubble being displayed while the compositing of the wm (be it compiz or metacity+compositor) is disabled. Check that you're running with a compositing window-manger (aka "Desktop Effects" set to anything but "None").
What you're seeing there is a bubble being displayed while the compositing of the wm (be it compiz or metacity+ compositor) is disabled. Check that you're running with a compositing window-manger (aka "Desktop Effects" set to anything but "None").