My wife and I just finished watching season 2 on dvd last weekend, and just as Miriel said, I felt like I was watching the next episode in the current season rather than starting a new season. But on that point, the producers have said that this is actually season 2.5 and will only be 6 episodes long, and that season 3 will be 17 episodes long and will start somtime after 2.5 (presumably after the new year) and each week will be a new episode (i.e. no reruns).