I installed (twice) Ubuntu x64 11.10 and it does boot (most of the time, sometimes it gets stuck with this problem My fresh installation doesn't load. (PulseAudio problem))
The little startup sound plays, I see a background, and a toolbar left and a thinner grey one top. There's three buttons on the left one, nothing on the top. I can move the mouse cursor but no key press or mouse (left or right click) anywhere does anything. I don't know what's going wrong with it or what to search for to find a solution. I'm hoping someone has an idea from this description.
The hardware is relatively modern so quite possibly it needs some drivers or configuration changes:
intel DX79T0 motherboard i7 6-core ATI Radeon 6950
What steps should I try to resolve this?