So the first week/two were just fine, but now with or without nav, on SD music or DVD music/divx, it will randomly reboot at least once per day (1-2hr of driving). I can force the reboot by pausing a divx video and just keeping it on pause (really pisses me off when I'm using my oldschool bluetooth headset or when someone else in the car is on the phone). I have no workaround or repeatability besides the pause-->reboot.