I wish Logitech would allow the LCC or release something to work with the Bluetooth version of the MX Revolution. I'm using Controller Mate right now, but it doesn't work perfectly. For example, when I activate Exposé (with the thumbwheel), anything the mouse cursor happens to be hovering over will act as though it has been clicked on. The same happens for ANY button, actually, but it's most annoying with Exposé. It's done that since 10.5, but now in 10.6, I have to keep the thumbwheel pulled back to keep Exposé activated, whereas in Leopard, it would STAY activated even after I released the wheel.