I'm testing my MX500 with a clean install of WinXP 32-bit.

- No mouse drivers ever installed.
- Cheesemousefix applied.
- Windows sens @ 6/11 (enhance precision disabled).
- Tried several USB polling changers, including one made specifically for SP3.

The mouse polling rate peaks at 629Hz.
I'm having noticable negative acceleration.

Is this normal?
Anyone here with the MX500/300 being able to go over 629Hz - and no neg. acc.?

Thanks.