I eventually got a "proper" screen resolution by entering
(Google is your friend!) and re-running the xserver setup. Seemed to cure my keyboard problems as well.
I installed a newer kernel to see if that would give me sound, but unfortunately not. Considerably speeded up my boot time though.
I like what I've seen, but I've also been playing with an Ubuntu live CD, and I think I like that better. For a start, everything just... worked. Just hope the full installation is the same.