Since my Xai is broken, I use a IMO 1.0A as replacement mouse. Now I wonder if there is any possibility to remove this negative acceleration and weird behaviour, which my mouse does when I move the mouse a little bit faster than usual. The cursor jumps around, up and down.

Settings: 500 Hz
DPI: Default (should be 400 DPI)
OS: Win XP SP3
Tweaks: Cheese Mouse Fix
Video: 1280*960 @ 85 Hz

currently: in_mouse 2 ...
everything else is pretty default.

Can I tweak some more the settings somewhere? I feel so 2002... :/

*edit* Switched back to the SteelSeries Xai (quite overdue edit).