My nook screen freezes about once a week. The latest firmware upgrade was supposed to fix it. It didn't, it only made it worse. Before the latest upgrade you could hold the power button down to unfreeze the screen. Now, with the latest upgrade, you have to disassemble the nook, take the battery out, plug it in to a wall charger, reseat the battery, wait, wait, wait, then it might unfreeze. Maybe the new ones will come with a small screwdriver holder so you always have some tools for fixing the screen. It defeats the purpose of a portable ereader if you have to take it apart all the time and have access to a charger and wall socket just to get the screen unfrozen. Barnes and Noble has known of these problems since the very first nook but has been unable, or unwilling, to fix the problems. The user interface needs a complete overhaul. The battery life is horrible. The screens have been developing cracks where the page buttons are. No file system, so all your books get lumped together.