About two days ago, YouTube videos stopped playing when my iPhone and iPad are connected to my house WiFi. The status icon spins for a while and then displays, "Playback Error". More info: I can access the YouTube site, but videos won't play. Videos won't play in the YouTube app, from embedded videos, or accessing the YouTube mobile website in Safari. YouTube works fine on my PC and my iPhone over 3G. ALL other apps work perfectly over WiFi. Resolution steps: Rebooted my iPad - still broken. Deleted and reinstalled YouTube - still broken. Called Apple - no help there. Anyone else having this problem? Any resolution? Thanks, Dan.