Ive had this unit since june 2009, not one problem out of it except human error. two weeks ago when I was entering addresses in the maps it just rebooted. Didnt think anything of it. The next day I decided to play with it to see if would do it again, and it did. So I stopped using navigation for a while and it didnt do it. Went on a road trip using navigation and it did it every 5 to 10 mins as long as the map navigation was on. Now its doing it whether the map navigation is on or not.

 

I thought it migh have been the alternator spiking it so I ran it off of straight battery power and it stayed on 15 mins till I messed with the bluetooth radio and it rebooted again....

 

Could it be software driven or might the radio be going bad on me???