cannot install at all (ubuntu 12.04 amd64)

edit

So I've got a VM running Ubuntu 12.04.1 x86 on my laptop, and my desktop is running 12.04 amd64.

Installation on the VM went smooth. No way of getting ROS Fuerte to install on the desktop though.

I updated the sources as per the installation tutorial, but when I get to the actual installation there are all sorts of unmet dependencies.

 sudo apt-get install ros-fuerte-desktop-full
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 ros-fuerte-desktop-full : Depends: ros-fuerte-nodelet-core (= 1.6.5-s1346187746~precise) but it is not going to be installed
                           Depends: ros-fuerte-geometry-tutorials (= 0.1.3-s1346209883~precise) but it is not going to be installed
                           Depends: ros-fuerte-orocos-kinematics-dynamics (= 0.2.3-s1346186954~precise) but it is not going to be installed
                           Depends: ros-fuerte-filters (= 1.6.0-s1346190801~precise) but it is not going to be installed
                           Depends: ros-fuerte-slam-gmapping (= 1.2.7-s1346196768~precise) but it is not going to be installed
                           Depends: ros-fuerte-simulator-gazebo (= 1.6.14-s1346200794~precise) but it is not going to be installed
                           Depends: ros-fuerte-visualization (= 1.8.14-s1346193234~precise) but it is not going to be installed
                           Depends: ros-fuerte-vision-opencv (= 1.8.4-s1346232876~precise) but it is not going to be installed
                           Depends: ros-fuerte-perception-pcl (= 1.2.3-s1346187964~precise) but it is not going to be installed
                           Depends: ros-fuerte-geometry-experimental (= 0.2.3-s1346197152~precise) but it is not going to be installed
                           Depends: ros-fuerte-robot-model-visualization (= 0.1.2-s1346200453~precise) but it is not going to be installed
                           Depends: ros-fuerte-common-tutorials (= 0.2.3-s1346212230~precise) but it is not going to be installed
                           Depends: ros-fuerte-image-pipeline (= 1.8.4-s1346233129~precise) but it is not going to be installed
                           Depends: ros-fuerte-bfl (= 0.1.0-s1346191138~precise) but it is not going to be installed
                           Depends: ros-fuerte-diagnostics-monitors (= 1.4.3-s1346199496~precise) but it is not going to be installed
                           Depends: ros-fuerte-common-rosdeps (= 1.2.0-s1346186808~precise) but it is not going to be installed
                           Depends: ros-fuerte-geometry-visualization (= 0.1.1-s1346255820~precise) but it is not going to be installed
                           Depends: ros-fuerte-image-common (= 1.8.0-s1346187257~precise) but it is not going to be installed
                           Depends: ros-fuerte-bond-core (= 1.6.3-s1346187671~precise) but it is not going to be installed
                           Depends: ros-fuerte-python-qt-binding (= 0.1.7-s1346191935~precise) but it is not going to be installed
                           Depends: ros-fuerte-visualization-common (= 1.8.4-s1346192005~precise) but it is not going to be installed
                           Depends: ros-fuerte-physics-ode (= 1.8.0-s1346191674~precise) but it is not going to be installed
                           Depends: ros-fuerte-driver-common (= 1.4.0-s1346186749~precise) but it is not going to be installed
                           Depends: ros-fuerte-executive-smach (= 1.2.0-s1346197089~precise) but it is not going to be installed
                           Depends: ros-fuerte-stage (= 1.6.6-s1346208690~precise) but it is not going to be installed
                           Depends: ros-fuerte-dynamic-reconfigure (= 1.4.2-s1346186665~precise) but it is not going to be installed
                           Depends ...