Our iPad 3 is 20 months old now, and the home button doesn't work all the time, and it's shut down for no reason 3 times during the past week. Fortunately we have AppleCare on it, and they are doing an Express Exchange which will arrive Tuesday; simply have to love Apple's super support. I imagine we'll be getting a refurbished iPad 3, so the question is: What exactly is a refurbished iPad, and should we have any worries with it? Have any of you guys had any issues with a refurbished iPad? Thank you!