I just bought my 32gb ipad mini w/ retina a little over a week ago from target. This seems to be happening more than once a day. It happens on random occasions when I hit the power button to put the ipad to sleep or when I close the Smart Cover. It won't wake up when I go back to power it. I have to hold the power button and home button for 15 seconds for it to reboot. It's starting to get annoying. Has anyone else had this problem? I already paid $35 for front and back screen protectors so I really don't want to get this replaced, especially if they give me a refurbished one... Not sure what apple's policy is on 3rd party retailers like target too.