I installed the RC1 and everything was working good except for a few issues: 1. The optical light is always "ON" on the headphone hole only on Win 7 but not Leopard. How do you get rid of that? 2. Keyboard light would not turn off at the lowest setting. Sound is not as loud as well. I downloaded the latest Realtek audio driver and it's still the same. 3. 9600m GT is always on. I would like to use 9400m instead since it saves battery. Hopefully the real version will fix this issues on Windows side. On Mac side, hope the Snow Leopard does.