by ublug Mon Nov 19, 2012 9:21 pm
I have one last theory on this, but I'll probably never get around to test it myself, so might as well put it up here. I do not believe this will work, but it's still a theory, lol.
The theory is based on that the only time the flame is truly extinguished is right after you kill Gwyn, before you either link the fire or leave the arena. You'll also need to do this on a fresh game/new account with no previous savegames.
So, after defeating Gwyn on the first character, quit while still in the arena and start a new character on the next save slot. After ten characters (save slots) have defeated him, and they are all in his arena without going to ng+, all the braziers should be lit. The outcome of this theory should be apparent when the second character reaches the firelink chamber, if one brazier is lit or not.