Just another owner of a Nexus 4 with random reboots - except when it does reboot, it cycles on up until the point just before I can enter my screen lock pin, and then reboots - about 10 times before it's stable again enough to stay on at the screen lock login. What a pain. I've now reset to factory settings about three times, and have NO third party apps installed at all. I didn't even upgrade any google apps after the reset except for Maps and Gmail. Still does the reboot - 10 or so reboot/cycle times about 5 to 10 times a day. That 4.3 update couldn't get here any faster for me. I've lost faith in Android and LG.