So my dad bought a new 4g 20gb ipod two weeks ago, and the battery does seem to hold the suggested 12 hours battery life. He has, at the max, 7 hrs of use, and that is with all the functions off (no lights, bass, etc...). So are my only options are to return it? I have a 3g ipod and have never experience this problem.... Also, what is the process of a purchase exchange at the applestore? Are they good about it?