Mine does the same thing. Many random reboots. The wierd part is that I had the .577 version of GB on mine before the .596 and it was flawless. My phone had never been so good. I thought what the heck I will run the .596 and surely it's better. Had these issues ever since and I don't think it's as fast as .577 was with data. The speedtest results I used to get with .577 were great. If my signal is strong I get good speed with .596, but the signal is rarely as good so the speed suffers. I'm about to the point I'm ready to sbf back and then just reload the .577 or try another rom. In my opinion .596 stinks.
You mean 4.5.573?
Try CM7. Way better than the Moto GB leaks.
MIUI