I am having a strange problem when VirtualBox is in fullscreen (guest is Windows XP):
The desktop of Windows XP is correctly filling all the screen, but there is a "border" about 50 pixels wide that is not usable. That is: if I click on something that falls in that area (tipically the close button of a maximized window), nothing happens. Also I can see the mouse pointer changing from the standard Windows XP pointer to my Linux mouse pointer, as if the pointer exited the VM window.
I am using VirtualBox 4.1.8 non-OSE, but the problem has been there since a few releases back.
Does it happen to anyone else?