My Nexus 7 randomly reboots 2 or 3 times per day most days, but not every day. It's running the factory ROM and it's not rooted. It rarely reboots when it's actually being used. Usually the reboots happen when it's sitting idle. Googling around led to suggestions to take a bug report immediately after it reboots. I have a couple, but I don't know what I'm looking for in them. The files are over 111k lines long so it's not like I can just skim through the file. How can I go about finding out what's causing the tablet to reboot?