mot/verizon pushed android upgrade from 2.2 to gingerbread lately. it hit my droid2 again and again and finally I accepted it. once upgraded, i knew i was wrong - it ran much slower due to bigger memory occupancy; destroyed rooting; froze on some applications for a nicer looking and better battery management (lasting longer)... checked on web and found out many people complained the same. many people expressed regret but couldn't reverse with "factory reset"...
so if you have rooted your phone, reject reject reject....