Mine reboots often with Pandora running, and sometimes with Google Maps. It never once rebooted before the OTA update, to my knowledge. Now it reboots quite a bit, sometimes 4 times a day. Oddly, the thunderbolt animation at boot up no longer includes sound. Not sure if that's by design or not.
I did a battery pull while the phone was on and pulled out the sim card. held down the power button for 15 seconds then put the battery and sim back in and turned it on. never reboot once since then
