I have an older Bamboo Fun Model (White, small size), and this is an issues I've been running into ever since I upgraded to Snow Leopard (I have Lion now, I just never got around to trying to fix this). I've downloaded the latest drivers from wacom, but when I load the pref. pane all I get is a message that reads "There is a problem with your tablet driver. Please reboot your system. If the problem persists reinstall or update the driver." I've tried all of these. The mouse and pen both don't seem to track properly, either. Has anyone else encountered this?