It seems that while mozilla will not be supporting 3.6.x anymore with regard to security issues etc, Palemoon will be. Hence if you are a 3.6.x user and do not for whatever reason want to go to 11, palemoon seems a good way to go. They also have an 11 version track.
-----signature-----
When you squash every flavor of the month all you have in the end is vanilla...
Endgame all too often = End of the game being fun
Endgame all too often = End of the game being fun