Also i think it might help to just run a standard programs updates/upgrades while sticking with the 12.04 LTS. With the Unity interface i usually use the Software Manager to install Synaptic Package Manager and then do all my installs and upgrading from Synaptic. Dunno what came as standard but i tend to add Gimp and a few other things for my work.
It really should all work out of the box. I'm sure Canonical would be very interested to hear that there are problems.
Good luck and regards from