Each time Ubuntu virtual machine running on Apple Mac OS/X host machine upgraded to new kernel or major upgrade, Oracle VM VirtualBox Guest Additions need to re-install. Also, it need to upgrade when Oracle VM VirtualBox upgrade to new version.
These keyboard shortcuts are helpful. Some of them are not document in Visual Studio 2010 Express, for example: <Ctrl> F5 to run the application without debug <Ctrl> Period or <Ctrl> Space for code completion. <Ctr> <Shift> <B> to build the solution For more download the Visual Studio 2010 Keybinding Posters from Microsoft. Credit: Visual Studio 2010 Keyboard Shortcuts - ScottGu's Blog DevCurry: 30 Favorite Visual Studio Keyboard Shortcuts