I am using Macbook Pro 15 inch with Mac Lion 8gb on memory and 1gb of Video. I have VirtualBox Version 4.1.6 r74713 and the lasted version of Ubuntu. I have a problem with window is not appearing after I installed "Guest Addition..."
This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, see the FAQ.