X and Fluxbox :: Mouse pointer jerky.

I'm having a bit of a problem. I've just installed 0.8.3 to my hard drive (enhanced install), and although my optical mouse *mostly* works, there is one big bug.

Whenever i move it slowly, the pointer does not move at all. Only when I move it quickly does it move (at a speed determined by xset m).

I've looked on the Internet in other places, but I haven't found any hint as to what's cauing the problem. I'm sure that it's not the mouse itself.

Could anyone help me?

James Fox

original here.