Wirelessly posted (Mozilla/5.0 (iPhone; CPU iPhone OS 5_0 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A334 Safari/7534.48.3) Has anyone heard about the problem with hissing/high pitch sound when you plug the iPhone 4S into an aux cable in a car? I have this issue. It seems widespread. Only happens when I'm listening to music in the car. Has anyone encountered this?