I purchased an iPod Touch before Christmas and one day it just would not turn on. I sent it back to Apple and they replaced it. The problem I have with the replacement is that the battery discharges overnight. With a full charge if I leave it overnight, in Sleep mode, by the morning the battery is fully discharged. WIFI is turned off and nothing is else is running i.e Music/Video. I think that I may have another DUD. Has anybody else experienced this problem?