Questo è l'errore:


provo da terminale:
codice:
dante@dante-PC:~$ uname --all
Linux dante-PC 3.5.0-21-generic #32-Ubuntu SMP Tue Dec 11 18:51:59 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
dante@dante-PC:~$ 
dante@dante-PC:~$ 
dante@dante-PC:~$ virtualbox
WARNING: The character device /dev/vboxdrv does not exist.
	 Please install the virtualbox-ose-dkms package and the appropriate
	 headers, most likely linux-headers-generic.

	 You will not be able to start VMs until this problem is fixed.
l'istallazione di virtualbox-ose-dkms fallisce:
codice:
dante@dante-PC:~$ sudo apt-get install virtualbox-ose-dkms
...
...
kernel source for this kernel does not seem to be installed.
 * Stopping VirtualBox kernel modules                                                                                                           [ OK ] 
 * Starting VirtualBox kernel modules                                                                                                                   * No suitable module for running kernel found
                                                                                                                                                [fail]
invoke-rc.d: initscript virtualbox, action "restart" failed.
Configurazione di virtualbox-ose-dkms (4.1.18-dfsg-1ubuntu1.1)...
dante@dante-PC:~$
che fare?