I just installed 4.0 on a MacBook Pro running OS X 10.4.11. I then created an Ubuntu 8.04 VM. A few problems: - During the installation, the keyboard worked and the mouse did not. - After the Ubuntu reboot, neither the keyboard nor the mouse worked. - In full screen mode, the OS X menu bar stays visible. I'm not sure if this is correct behavior, but it's a change from Parallels 2, and IMHO it should not be visible in fullscreen mode. I mention it in case it is somehow related to the mouse and keyboard problems. Any idea how to fix these problems? Jack Orenstein