stealch@stealch-office-reg:~$ vboxmanage startvm Spam --type headless
WARNING: The character device /dev/vboxdrv does not exist.
Please install the virtualbox-dkms package and the appropriate
headers, most likely linux-headers-generic.
You will not be able to start VMs until this problem is fixed.
Waiting for VM "Spam" to power on...
VBoxManage: error: The virtual machine 'Spam' has terminated unexpectedly during startup with exit code 1 (0x1)
VBoxManage: error: Details: code NS_ERROR_FAILURE (0x80004005), component MachineWrap, interface IMachine
Вот такую ересь мне выдал. Все работало, но внезапно... запрошенный пакет установлен.