I bought a Magic Mouse yesterday to use with my mid-2012 non-retina MBP, and I was absolutely impressed by the appearance. After using it, I love the gestures as well. Problem is... The tracking is terrible. The pointer moves way too fast sometimes and way too slow other times, and it often goes from slow to fast and vice versa without a middle ground. As such, I find myself completely overshooting things that I try to click on. Even when I undershoot things, I still end up overshooting them when I try to move the pointer just a bit further. To make sure I wasn't going crazy, I used my old wireless mouse again and it was exactly as I expected- consistent. I tried changing the tracking settings, downloading MagicPrefs, and nothing makes the Magic Mouse any more consistent for me. Is there something I'm doing wrong? Any suggestions? Thanks in advance!