I see many theories saying that Jane is Red John due to a split-personality disorder. This is completely and utterly stupid for many reasons:

One: Bruno said himself that Jane is not Red John.

Two: Jane came face-to-face with Red John (season 2 finale)

Three: Jane was in a car and was speaking to Red John (season 4 finale)

Four: Jane was on TV when Red John murdered his family.

Five: Red John is able to lure women in with charm; thus revealing to the women that Red John is Jane and those women wouldn't understand why he would want to plague himself.

Six: Red John poisoned Rebecca himself (we see a figure walking through, Rebecca smiling lovingly at him) after Agent Bosco was killed, Jane was upstairs and once he found out, he ran downstairs to find her dead.

So can we stop with the Jane being Red John theories? It's physically impossible for him to be Red John. This isn't a Dr Jekyll & Mr Hyde story line.