Arghhhh!! What's happened? Recently (about twice), including today, my new iPod mini won't turn on! I know it's got plenty of power because I charged it last night, and even went for a very SHORT walk this morning with it. Now, it won't do anything, even if I put it on the dock to charge. I'm planning on heading to the Apple Store anyways to buy some accesories for my powerbook, is there a defect in my mini? should i replace it? what should the Apple Store do about it?