I'm not sure if anyone else is experiencing this or not? Ever since upgrading to iOS 4.1 on my iPhone 4 everytime I connect my iPhone 4 to my Pioneer AVH-P3200BT car stereo via USB there is alot of static every few seconds. It sounds like a scratched cd. I have tried everything to fix it including switching USB cords, resetting stereo and iPhone, turning off bluetooth, pairing Bluetooth before connecting, and none of these methods fixed the static. I think it's a bug in the USB audio out for iOS 4.1.