Extracted from debian-list Tip provided by Hernan Joel Cervantes Rodriguez
>
> How do I change the mouse speed in X?
>
Try man xset. the option "m". e.g. :
"Very Fast" xset m 7 10 &
"Normal(Fast)" xset m 3 10 &
"System Default" xset m default &
"Glacial" xset m 0 10 &