Vista - Halo 2 mouse tracking bug/glitch

Hello everyone!
I'm having a problem with my Halo 2 running on a x64 Vista Ultimate. What happens is that every 10 sec or so the game freaks out when moving the mouse on the x-axis too quickly (let's say trying to turn really quick when someone's shooting at your back). The mouse jerks and doesn't really move that far. Not only that, but my actual windows mouse icon appears on screen for a brief second and off center (i'm guessing the position where the gun should have been pointing by that time in the turn).
Weird thing is that this only really happens on the x-axis, but that might be saying little because there is little need to quickly move the mouse on the y-axis. I've tried to find a similar problem in the forums but haven't found one. Any help is appreciated, because this bug or glitch or whatever makes the game near unplayable. Thanks!

Hello SuperNinja,
Can you list your system specs, also is this the only game it does it on ?, thanks.

Intel Core 2DUO CPU E7400 @ 2.80GHz, 4 GIGs of ram, 64 bit system, NVIDIA Geforce 8800 GT running Windows Vista Ultimate SP1.
Also, this problem is just unique to Halo2. I've never had this problem in any game before. Thanks for the help!

Sounds like you could have something running in the background, make sure all windows are closed, also run msconfig and close all startup programs you dont need.

Yes, I tried that. Unfortunately, although my mouse cursor is no longer visible when the lag happens, the problem still occurs just as frequently. Could it be a mouse issue?

have you tried to update your drivers for the mouse?

also you could see if there is a patch for the game.