I have Mavericks on my macbook pro running Parallels 9 and have updated every time there's an update. I run Windows 7 Premium on Parallels and use a Magic Mouse. The cursor goes crazy very often. First, the scull speed is usually very fast. When I use Visio, I can't keep the page in the window. In my Outlook email, the slightest touch (sometimes I can't even notice what I'm actually touching) and the inbox scrolls extremely fast to the end. It seems that light touches on the sides and/or edges of the mouse make it go crazy and stuff goes flying! I really like the Magic Mouse a lot because of its gesture capabilities, but the driver into Windows (or something like that) can't handle the data coming from the mouse. Is there a fix for this? Perhaps a way to make the Windows driver ignore the data that it can't handle correctly?