As far as I know, they're going to run the ten S4 episodes that they shot before the writer's strike and then there's a big break until the last ten episodes run. They've gone back to shooting the last ten episodes of S4 but they MAY not air until 2009. Before the strike, everyone wanted to blame the Sci-Fi Channel for the break but, to me, it's more likely that Universal wanted it that way so they could sell a S4.0 DVD set and a S4.5 set. The writer's strike just gave Universal the excuse they needed to have a big break between the halves of the season and sell more DVDs. I'm not a fan of watching shows online but if I were you, I'd just watch them on the Sci-Fi Channel's website. They're free and legal and you won't have to worry about spoilers.