Listening to Pandora over the weekend, the sound intermittently sped up and slowed down...Normal, Alvin & the chipmunks, normal, etc. I searched this forum for "Pandora problems," found nothing...then got distracted and didn't pursue it. Today I was showing someone the "Hail to the Chief" ring tone I installed for my wife's calls, and it was doing the same thing...speeding up, slowing down, randomly. I searched this forum for audio problems, found nothing applicable. So I powered down, and powered up, and the problem seems to have disappeared. Anybody have any idea what is going on?