Had a weird issue today that's hanging around. The ringer volume pegged when I was listening to iTunes (wake up call for sure in the headphones). The volume control previously worked, feels solid as it did before, but volume won't adjust downward. I can toggle the mute, which allows adjustment for about 5 mins, then it will ramp up again. Anyone else with this concern? I just updated to 3.1, but this has not resolved it.