Did you watch the same Favre as the rest of the world last season? He had 33 TD's only 7 INT's and a great QB rating. You can blame him for the loss to the Saints, but he is not the one who fumbled every time he touched it (Peterson), and they still had a chance to win. We all know they out played the Saints, and if not for Adrean "butter fingers" Petterson, they would have won by 2+ TD's.
I am not a Favre fan, but to say he only played well in the first six games and/or give him sole blame for the NFC championship loss is inaccurate.