I thought this was a problem with a bunch of graphic novels that I had downloaded and been reading so I instantly deleted them from my device once I was done with them but I’ve noticed this happening with other books as well, most recently with a book I purchased from the Kobo store. I finished the book and got prompted to review it then the screen froze. Other times the freezes have been random. I would say this has happened around 5 times since I purchased the device at the beginning of May. When this happens I just hold the power button until it refreshes and it just restarts, but I don’t think this is ideal. Im concerned because this is a new device so this problem is bound to get worse over the years, right? What should I do?