lagging mouse issues

[fluorescenthippo]

My mouse lags in Windows and when i play games. basically, when i move my mouse fast in one direction, the cursor takes longer to get there than my hand. im talking like a few miliseconds here. most people wouldnt even notice it. in fact, i bet a lot of people have this problem and dont even notice it because its so slight.

anyways, my friend who is a really good counterstrike player, noticed this instantly on my computer while playing counterstrike. but we are having troubles fixing it. my mouse works fine on his computer, his mouse lags on my computer. so its probably my computer hardware or drivers that is the problem.

i have a logitech mx500(usb,nonwireless). i have tried installing logitech drivers and windows drivers and both dont help it. i have had this mouse on 3 different computers. one decent computer, one crappy one, and one pimped out one. i had have this lag issue on all but the crappy computer. i did a fresh install of windows xp pro corp a week ago.

im pretty sure its hardware related based upon this information. maybe a usb port problem? a chipset problem?(i installed latest chipset drivers) i just got a new shuttle pc a week ago and today i installed counterstrike only to realized i still have this stupid lag issue on my top of the line computer.

any suggestions would be great