I was just messing around with my iPod and I noticed that if I try a combination of messing with the volume on the unlock screen, and actually unlocking the ipod, it shows the volume indicator just like on the iPhone. Then it does the loading circle thingy and reverts back to the unlock screen. Weird right? Video link: http://www.youtube.com/watch?v=9hYf3oIPCv0 Perhaps it is supposed to do this? Or maybe it is just leftover from the iPhones coding.