(on latest Mavericks)
While in VirtualBox (Ubuntu) fullscreen, on a Mac host, each time the mouse goes near the top, the Mac auto-hide menu bar appears - and I want to prevent that, or at least, since it's the annoying component, reduce the time it takes to that menu to disappear when the mouse goes down [currently it's ~1 seconds].
Ideally the time needed to trigger that menu should be higher than currently [instant] - eg like keeping the mouse on top for 1 whole second.
Illustration below shows the Ubuntu menu that has been overridden by the Mac menu when the mouse hits the top of the screen.
There are already a few questions like this one that are either old or not answered.
Any progress in Maverics, near 2014?