Hello, I have a new iPod touch 4Gen. I do have wifi in my house. I left my iPod sitting on a chair almost fully charged and by morning it was completely dead. I didn't leave any music playing. Why did this happen? Are applications that are running and not "exited" still draining the battery? Or is the device constantly communicating with my wifi, even while I'm not using it, thus draining the battery? I do get push updates from Apps, but usually just one or two.