Never experienced any noise with iPad original or any of the iPhones. But, iPad 2 I bought two iPad 2's - one is 16GB WiFi and the other AT&T 64GB. I noticed that when I connect to AUX in the car, there is a lot of hissing noise. Both the iPad 2's are like that. Never experienced this in the original iPad. Tried all sorts of options ... low volume, mute etc. Anybody noticed this ? Any solution ?