I was using the new Music app on the way home from work (using Bluetooth in my car) and I noticed that the entire phone had a 2 second lag between doing anything like switching apps, hitting the home button, tapping an icon. Everything seemed like there was a massive delay. I restarted my iPhone and it seems to be working now, but is anyone else having this kind of lagging? I've never seen my iPhone behave so slow before. Could it be that there's a memory leak in the new music app?