Seriously guys, if you are having such major bugs with your new radio that it reboots when you select 2G only, you have a bad update. Try doing it again, manually, using a clean and fresh download of the OTA update. Even try downloading it with your computer, then putting it on the SD card(thats what I did, personally).
But you shouldn't have reboots... and really, you should have better coverage considering so many of us have better coverage and it seems a very small minority have worse... the only way that might be a result of the new radio ROM is if your cell phone providers tower radios happen to be an odd duck, but I would be willing to bet out of all the people have good experiences, some in the same city as some of you, that isn't the case....
Try the fresh manual update...