Hey everyone, I sent my MBP into Apple because I had the infamous whine, screen buzz, excessive heat issues. I got it back today and this is what they told me. Apple have replaced the logic board with a newer revision "D" board but I still have a slight whine when running on battery. I don't think they have replaced the inverter for the screen buzz as I still have a slight buzz when the brightness is on anything bar off and full. The heat they said is normal and happens to all MBP so I'm guessing they just applied the thermal paste according to the manual when replacing the logic board. How do I actually find out if they have replaced the board or not. A few other things too. Should I reinstall OSX on this machine. Reason being. My serial is not longer displayed in the "About This Mac" box. It just says "Serial Number: SystemSeumb". I have and OSX and XP partitioned drive. Now, the XP drive is no longer listed as an option at startup. When I run Boot Camp it says my firmware needs updating. I've tried reinstalling the 1.0.1 firmware but it wont work. I shutdown, reboot holding the power button, wait for the light to flash, let go, the screen flashes up for a split second with the updating progress bar at the bottom of the screen but then the machine just reboots. When I try to go and use Boot Camp again, it just says I need to update my firmware. Any ideas why? Thanks, Nick.