It seems like a lot of people have battery issue with iPod Touch 4th Gen. I bought one at Christmas time(32GB).I have not used it very often. there are only two apps on it. Today, I tried to charge it. It would not charge. I tried 4 charge cables(one is for iphone) on three computer's USB ports, and many wall outlets also, It would not work. When I plugged the ipod into the computer, I could use it, but it would not charge. the battery was almost gone completely. I tried to hold power button and home bottom at the same time, I did get the apple icon. But it would not charge. Finally,I had enough. I decided to take it back to the Apple store tomorrow. Meanwhile,I plugged the ipod in to my computer and left it there. suddenly, the battery symbol turned green. I had no idea how it happened. It's charging.I unplugged it from my computer and plugged it into the wall outlet. It was also charging.I don't know if the problem has solved permanently or just by luck. should I still take it back to the apple store? It is under the warranty.