Magic mouse is not tracking well with my Mac Pro. Surface is clean, and I've blown to try to clear off the optical sensor on the mouse. Also put in brand new batteries. I've moved the tower within 1-2 feet of the mouse to make sure there's no interference, but still getting the issue. A google search told me to reset the PRam, which I did, but it didn't solve the problem. My trackpad does not have this issue, but I like the magic mouse (when it works) much more than trackpad! Any ideas on what could be causing this?