Not sure where I should post this but thought someone else with a new imac might of had same issue. just got a 27" this week and just got around to installing windows 7 with bootcamp. When I first got the imac I installed maverick. Everything installed fine but the magic mouse is acting crazy. It syncs and works but scrolling is so sensitive. When I am on lists that go up and down horizontal touches will scroll up and down as well. The slightest touch of the mouse causes scrolling no matter what direction I touch it. It is making it impossible to do the work I do on windows. I have used this mouse with a 17" mbp and lion and never had a issue with this. Not sure if its maverick or some new bootcamp windows drivers. Has anyone else had this issue? Does anyone know a fix?