I just got a brand new 2.4 GHz Penryn MacBook Pro and have used Boot Camp to install Windows Vista on it. Vista installed fine, and then I used the Restore DVDs that came with my MBP to install the drivers. The Device Manager shows that everything is installed correctly. All is not well, however. Whenever sound is being output, there are random crackles or pops - sometimes there will only be one every 5 minutes or so, sometimes there are 10 of them right in a row. The only thing Vista tells me is that there is a "Compatibility issue between Intel 82801GBM (ICH7-M) LPC Interface Controller - 27B9 and Windows Vista." I have no idea what that chip is, and have been unable to find drivers for it (and ICH8 devices show up as being installed correctly in the device manager), so I'm unsure if this is related to the sound problems, or if this is even an issue at all. I've done all Windows Updates, and tried the Apple Software Update tool as well, and have nothing left to install. I found and downloaded the latest Realtek High Definition Audio Codec, but that did nothing to fix my audio problems. The only other sound device in Device Manager is High Definition Audio Controller (under System Devices), but there is no manufacturer or model number listed so I can't begin to figure out where to find drivers for it. There are NO audio issues in Leopard, however, so this leads me to believe this really is a software/driver issue in Vista, not a hardware problem. Has anyone else experienced this, or know of a way to fix it? Thanks for your help.