Just wondering if any of you have any problems because it seems like mine does every other day now, and I can't remember it happening with previous versions. I'll go to use my phone and nothing. Just a black screen,powered off and buttons unresponsive. I have to hold down the home and power button for a good while before it powers back on again. Kind of annoying so I thought I'd see how you're all fairing. This is a locked phone btw.