When try to shutdown the computer it stays on a "Stopping VirtualBox kernel modules" message. It looks like it has to do something with VirtualBox, but happens even if I didn't use VirtualBox at all. Also it happens randomly.
This is what I see on the screen.
The system is going down for halt now * Stopping TiMidity++ ALSA MIDI Emulation... hecking for running unattended-upgrades: * Stopping UPnP devices daemon minissdpd minissdpd: received signal 15, good bye speech-dispatcher disabled; edit /etc/default/speech-dispatcher * Stopping VirtualBox kernel modules
And it stays here forever if I don't do the "force power-off".
My specs: Ubuntu 12.04 LTS on Dell Studio 1555 Laptop