Negative Mouse Acceleration

Negative Mouse Acceleration is when your your mouse slows down/stops when you quickly move your mouse. This issue is common in many new games and is usualy patched up quick and easily.

This video shows you exactly what I am talking about:
http://www.youtube.com/watch?v=xpzFqr-Rn_w

Also, to prove its a problem with crossfire I have tested this out on 3 different PC's/laptops using 3 different mice, Razer Deathadder, IME 3.0, mx518 and they all experience the same issue. This issue is much more apparent when you use lower sensitivities, its causing me alot of problems and I wish to see this issue fixed so I may enjoy my time playing CF.