LA Times says:
Tense negotiations are underway between the cable network AMC and Sony Television, producer of "Breaking Bad," over a deal for a fifth and probably final season of the critically acclaimed drama.
Talks seemed to reach an impasse last week when Sony sent feelers to at least three other cable networks about taking "Breaking Bad" should an agreement with AMC fall through, said two people with knowledge of the matter who requested anonymity because of the sensitive nature of the talks.
To be sure, negotiations between networks and producers are often heated. As shows age, they become more expensive as actors' and producers' paychecks get bigger with success. Both sides have indictated that they hope to reach a pact that will keep "Breaking Bad" on AMC.