I recently installed the newest iPod Touch operating system upgrade (OS 4). Now, literally overnight, my battery depletes dramatically faster than it used to. Since I’m not an active user, it used to hold a “full” charge most of the day. Now it barely makes it through my work day. And the iPod is relatively new so I doubt it’s a bad battery. I’ve even shut off the “on” settings for most of the features. Anyone else notice this?