Mouse Sensitivity

loanb

My mouse sensitivity is never the same each time I log in. For Cross Fire I have it set as a certain number such as 7 - 25, but even after saving I notice it keeps changing to 6/8/9. (The zoom sensitivity also changes.) The sensitivity is ALWAYS different each time I log in. Not a big difference, just by a number or so, but that number makes a huge difference on my mouse. Does it really matter what type of mouse I have, etc? The issue is in-game, since the sensitivity does not want to save permanently.

Nobody uses my account or changes any settings.
steelseries Ikari 800 CPI
Windows 7 64 Bit
mouse acceleration fix enabled