I bought my ipod like last june, and just to see if I could really get that *8 hour battery life, I let my ipod run its full gamet after being fully charged of course. To my surprise, it only ran 1 hour and 40 min! like, super wtf, I thought id get at least 4 or something. So, the ipod is still covered under 1 year warrenty.. Do i just take it back to apple store and i get a replacement free of charge or what? I mean cmon' only after 6 months of use, it goes down to an hour... 