I just updated from Opensuse 10.2 to 11.0 and also installed the ut2004 linux demo (v3334).

When I start the game, my mouse just goes nuts. It becomes uncontrollable already in the main menu, I can't even reach the actual game.

It seems like a really-really bad lag. When I move my mouse across the screen, the pointer does follow this movement but about 5 seconds later. Oh and I have to constantly keep moving my mouse for it to update.
So basically when I have drawn circles on the screen for 5 seconds, the cursor is just starting.
And I think this applies for my keyboard also (I press enter, move my mouse around a bit and then it registers).

This is really messed up and I have no idea what could be wrong.

Mouse is quite ordinary, Logitech USB optical. Works fine everywhere else.
I played the ut2004 demo without problems on the same hardware, just under Suse 10.2 installation.