I have recently had some issues in fixing my nvidia graphics card issues after a new Ubuntu 13.10 install - so I may have accidentally screwed up some settings.
My problem is that some apps keep their own menu when it should only be shown in the global menu. What I mean is that if I open some applications (e.g. gnome-terminal, disk usage analyzer, system monitor, totem and others) I see both the application menu on the app itself as well as the global menu. It doesn't matter if I maximise the window or not.
After my initial install it all worked ok, i.e. all menus where only shown in the global menu, until my recent issue with my nvidia drivers.
How can I get application menus to only be shown in the global menu (as per the default Ubuntu behavior)?