When I install a copy of Vista on my Macbook Pro, I hear a high pitched whine coming from the magsafe power connector. As soon as I unplug it, the noise goes away. If I start up any sort of program that constantly uses the CPU such as an online radio stream, the noise also stops. I haven't had any noise issues running XP Pro and am wondering if there is some setting I can change in Vista to stop the noise (it is giving me a headache). Any thoughts?