I kept getting the BSOD ( blue screen of death) and even went back to the ATT Store and swapped my SM-907A for another one and it blue screened in under an hour. I called Samsung and they said they had defective motherboards. He mad up a ticket for me and I am sending it out to them before work in the AM. The ATT Store said they would return it for me with a 10% restocking fee. Really??? Whatever I really like the tablet and it was the last one available in the area so I decided to send it out to Samsung to replace the motherboard. A guy in another thread said he did this and now the tablet is 100%!!! SO anyone else have issues with these????