Since upgrading my first-gen iPod touch to 3.1.1, I've noticed that double-tapping Home takes me back to my home screen instead of bringing up the volume slider (and iPod controls). I see there are options in Settings>General for configuring this behaviour, but none of them are equivalent to the original set-up. Has anyone found a way to restore it? It's pretty annoying to not be able to adjust the volume without quitting an application.