I used it last about 3 hours ago and remember seeing it with 70% battery life left. I come back to use it and it wont turn on. I thought maybe something was running and ran down the battery. It has now been on the charger for 30 minutes and still wont turn on. What a bummer. Anyone else having this issue? Since I bought it from Best Buy should I go back to them and replace it or go to an Apple store to see if they will warranty it?