I'm perfectly happy with my S3 on MB1 and have no desire to update, now at least. I received the OTA notification this morning, but I did not press either OK or Defer. I just pressed the back button to get out of it, but it keeps reappearing every few minutes. I tried wiping the cache partition to see if that would help, but no. Would clearing data in the SDM app or maybe Google Framework Services help, or would this cause other problems?