ok. i got an mx510 for my new emac because i knew i would get sick of a 1-button mouse. it worked great at first, but then i had to reboot to install 10.3.7 and some other things and it didn't work in Safari. i thought, okay, i'll just install the logitech control center dealie, but that stopped it working in expose, and the application switch button just does cmd+tab, not show all windows like i had programmed. it does work in safari though. right now i'm using the plain old apple mouse because if the actual mouse is broken i don't want to use it too much before returning it. if i do have to return it or whatever it was ordered from newegg...any help would be much appreciated. i uninstalled teh logitech control center and trashed the preferences file from the library. i haven't tried rebooting yet, but i did fiddle with the expose settings in system preferences.