ごめん。上げちゃった
お詫びに、archのフォーラムからマウスの調節できねーよに対する回答のせとく

Test different values in a console with xset m.
For example:
Code:　xset m 3 2
(The first number is the speed and the second is the threshold)
Then put in the .xinitrc the command with your best values.