It’s too disturbed to run ‘/etc/init.d/vboxdrv setup’ command after kernel update each time. But how can it be fixed?
Fortunately, way is:
sudo apt-get install linux-headers-`uname -r` sudo dpkg-reconfigure virtualbox-dkms sudo modprobe vboxdrv
So, DKMS package keeps track of Linux kernel changes and recompiles the vboxdrv kernel module if necessary.
Thanx to http://askubuntu.com/a/220778 a lot!