I was wondering if anyone else is experiencing this.

The X axis on my mouse movement (the side to side direction) seems messed up.

It moves slower than the Y axis and the faster I try to move the mouse the SLOWER it goes! o_0

These are my system specs (also found on my profile):

mobo: Intel DH55HC
CPU: Intel i3 540 (3.07GHz)
VID: XFX ATI HD5770
Mem: 8 Gig Mushkin DDR3 1333
Sound: SB X-Fi XtremeGamer
OS: Win 7 Pro (64 bit)
MOUSE: Cyborg R.A.T. 7
K/B: MS Ergo 4000
HeadPhones/Mic: TurtleBeach EarForce HPA2

All drivers are up to date.

Also, a little adjustment up creates a huge change in sensitivity over all.
I'm thinking this a game/driver issue; leaning toward the Driver side of things as I've had a couple small issues with some other games but not all.

Cheers!