One thing I noticed, which leads me to believe that it is not a headphone jack problem, is that when I listen to music using the stock music player, through the phone speakers, and put my ear right up to the phone, I can still hear the white noise 'whine'. It is not as pronounced as through headphones, but it is the exact same issue (with volume all the way down and music playing, white noise is evident, when the music is paused, white noise is evident for a few seconds and then a brief 'pop' followed by silence). This makes me slightly more optimistic that we are dealing with an issue that can be addressed via software update, but we will have to wait and see.