I installed xubuntu on n900. I don't have wifi Issues at all and I can move too-big-for-screen-windows with control-touchclick and that's pretty nice. I also installed a compact theme so menus and stuff look good on 800x480. All in all it's pretty nice and performance is good but...
while I can change language for keyboard some buttons are dead
Also bluetooth firmware doesn't load for me, maybe I didn't get the right one?
about the cam, there is probably not good software in ubuntu. seems like we need to include it. found this: http://graphics.stanford.edu/projects/camera-2.0/ and http://fcam.garage.maemo.org/ no idea how much work is neccesary to get it working.