Ubuntu Linux 12.04 host running Gnome classic with XP guest. Worked fine yesterday but this AM after some Ubuntu updates it fails with: Kernel driver not installed (rc=-1908). The suggested fix fails with:
/etc/init.d/vboxdrv setup
* Stopping VirtualBox kernel modules [ OK ]
* Recompiling VirtualBox kernel modules /etc/init.d/vboxdrv: 336: /etc/init.d/vboxdrv: cannot create /var/log/vbox-install.log: Permission denied
* Look at /var/log/vbox-install.log to find out what went wrong
The solution, use sudo:
sudo /etc/init.d/vboxdrv setup