Problem: My home screen no longer auto-rotates when I turn the phone on its side. Apps still do, and if I slide my keyboard out it will flip the home screen. Just started doing this on its own, and I can't think of any changes (settings or apps) that coincided with this behavior change. I've already unchecked and rechecked the Orientation option on the Sound & Display settings. While not a big deal, it kinda drives me nuts. Any ideas how to return this behavior to its default?