whenever I plug in headphones, whether it be iPod headphones or Sony or etc, the audio would always come out of both my headphones and speakers quite loudly, even on the lowest volume. I checked the jack and it's quite clean and the strip at the end is white. is this is a firmware or hardware problem? I don't want to bring it in to apple for fear of 3.1.3 firmware being on it. it's still under warranty so i may be waiting for a jailbreak before bringing it in. any ideas?