I've had no problems with using my MX900 with my PowerBook. There are no Mac drivers for the MX900 so I never installed anything. It just worked. Maybe try uninstalling the Logitech software and try ...
Such a simple request. I have a current model ibook with Bluetooth. I'm using a logitech MX900 over bluetooth. I love it and use it constantly. I've mapped the three funky top buttons to expose ...