Setting up virtualbox-4.0 (4.0.10-72479~Debian~squeeze) ...
addgroup: The group `vboxusers' already exists as a system group. Exiting.
update-rc.d: warning: vboxdrv stop runlevel arguments (0 1 6) do not match LSB Default-Stop values (1)
insserv: warning: current stop runlevel(s) (0 1 6) of script `vboxdrv' overwrites defaults (1).
Stopping VirtualBox kernel modules:.
Uninstalling old VirtualBox DKMS kernel modules:dkms.conf: Error! No 'DEST_MODULE_LOCATION' directive specified.
dkms.conf: Error! No 'PACKAGE_NAME' directive specified.
dkms.conf: Error! No 'PACKAGE_VERSION' directive specified.
dkms.conf: Error! No 'DEST_MODULE_LOCATION' directive specified.
dkms.conf: Error! No 'PACKAGE_NAME' directive specified.
dkms.conf: Error! No 'PACKAGE_VERSION' directive specified.
dkms.conf: Error! No 'DEST_MODULE_LOCATION' directive specified.
dkms.conf: Error! No 'PACKAGE_NAME' directive specified.
dkms.conf: Error! No 'PACKAGE_VERSION' directive specified.

Error! Bad conf file.
File: /var/lib/dkms/vboxhost/4.0.8/source/dkms.conf does not represent
a valid dkms.conf file.
dkms.conf: Error! No 'DEST_MODULE_LOCATION' directive specified.
dkms.conf: Error! No 'PACKAGE_NAME' directive specified.
dkms.conf: Error! No 'PACKAGE_VERSION' directive specified.

Error! Bad conf file.
File: /var/lib/dkms/vboxhost/4.0.8/source/dkms.conf does not represent
a valid dkms.conf file.
.
Trying to register the VirtualBox kernel modules using DKMS:.
Starting VirtualBox kernel modules:.