hi there - my ipad is fine, with one exception - if I am watching video, with the headphones, it works for about 15 minutes, then the volume on the headphones just drops away to nothing - the headphone volume icon comes up, and the dot on the volume bar plummets. i can bring it back up, and sometimes it works, other times it refuses to come back up, and is it essentially muted. Often the headphones icon will sit, unmovable as well, even though you can't force it in to any kind of action. I have rebooted, and tried different ipod headphones, but within minutes it does it again. help? thanks!