I have a slightly weird issue with VirtualBox. My host OS is Windows 7 (64-bit) and guest OS is Ubuntu 10.10(64-bit). When I switch to fullscreen mode in VirtualBox, Ubuntu display resizes to fit my screen size. however, after that the display is not updated. So if I click a menu or something I don't see it appear. but it seems to work in the background.
if I click a menu in fullscreen mode, I don't see anything happen, but if then switch to windowed mode I see the menu already open. I have installed virtuabox guest additions.
if any has a similar issue or has found a solution please let me know thanks.