Has anyone else on 2.0 noticed a weird glitch with the back button? It didn't happen on 1.27, but there are times now when I'm playing a song and hold down the back button--like before--to skip directly to the main menu screen, and instead of it doing that, the screen goes entirely white. My music keeps playing, and none of the buttons except the volume and power buttons work. Hard resetting works to turn it off, and back on. And there doesn't seem to be any particular "reason;" I'll skip back without an issue one time, and then the next time, it glitches.