When holding down the space key on a server I started (campaign), the bunnyjumps become levitation (and a shaky one at that). Why is this?

Typing cl_movement 0 into the Nexuiz console will fix that, iirc.

Are you sure you are running 2.5? In 2.4 it was a known bug.. can not be fixed easily however. In 2.5 some setting was changed as a work around.

Thanks torus, that fixed it. I was running the 2.0 campaign maps, maybe that was it?

however cl_movement 0 is bad for playing online.. And i do not get why you get that 'problem' with 2.5 at all. Are you sure you extracted 2.5 into a clean folder? No old pk3 files? Most evil can be old patch-*.pk3 files.