virtualbox.org

System : Linux Debian with LXDE desktop guest, with Virtualbox 4.3.4. (System host: Windows Seven).

Hi,

When I shutdown or restart Linux Debian, it says this :

...
Stopping VirtualBox Additions ...fail!
Cannot unload module Vboxguest.
...

Thanks you.

If you wait for a bit does it shut down?
Is the VirtualBox from the distros repo or VirtualBox.org?

Yes, it's shutdown or restart normaly when I wait.
VirtualGuest additions come from Virtualbox org, from CD Rom VboxGuestAdditions.iso.