I have a dual boot Macbook using OS X and Windows XP Pro. The USB ports worked in OS X and in Windows with either a corded mouse or wireless before I reformated and before I installed Snow Leopard. The USB ports work AOK in OS X after SL was installed using a wireless mouse, but not in XP Pro when trying to use a mouse. The USB ports work with my thumb drive and camera in Windows XP though. Anyone have a clue on what I need to do to get my wireless mouse to work?