Virtualbox broken dependencies.

[Anthony Nordquist <salinelinux@gmail.com>]

I tried running an upgrade today with the Virtualbox backport package 
installed. Below is the output of Aptitude, it seems that the virtual 
package virtualbox needs added to the repository as well as 
virtualbox-qt. This error seems to have appeared with the upload of 
Virtualbox 4.0.8 .

aptitude dist-upgrade
The following NEW packages will be installed:
  virtualbox-dkms{ab}
The following packages will be upgraded:
  virtualbox-ose{b} virtualbox-ose-dkms virtualbox-ose-qt{b}
3 packages upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 749 kB of archives. After unpacking 58.5 MB will be freed.
The following packages have unmet dependencies:
  virtualbox-ose: Depends: virtualbox which is a virtual package.
  virtualbox-dkms: Depends: virtualbox which is a virtual package.
  virtualbox-ose-qt: Depends: virtualbox-qt which is a virtual package.
The following actions will resolve these dependencies:

     Remove the following packages:
1)     virtualbox-ose
2)     virtualbox-ose-dkms
3)     virtualbox-ose-qt

     Keep the following packages at their current version:
4)     virtualbox-dkms [Not Installed]



Accept this solution? [Y/n/q/?] q
Abandoning all efforts to resolve these dependencies.
Abort.


Apt get doesn't do any better:

apt-get dist-upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
The following packages have been kept back:
  virtualbox-ose virtualbox-ose-dkms virtualbox-ose-qt
0 upgraded, 0 newly installed, 0 to remove and 3 not upgraded.