I installed Ubuntu on VirtualBox today. In order to have a shared folder with my host OS (Win 7) I followed the advise listed here:
When I start the VM now I get :
VBoxClient: the VirtualBox kernel service is not running. Exiting
at the top of the screen and I am unable to change the screen size to the full resolution of my Monitor. This was possible before. I already tried the solution supplied here:
But it does not work. My virtual box installation is not updated to the current version for various reasons.