From SyFy Portal:
Forget about those one-hour timeslots on SciFi Channel. That is if your name is "Battlestar Galactica."If the writing for the final half-season of BSG is paced the same way the first half of the season was, then those episodes might not end until sometime in 2013.
Executive Producer David Eick told SciFi Wire at Comic-Con that the network has given them the greenlight to extend episodes they want to extend, and make sure every minute the writers and producers want to include in the final episodes are there.