I think Hulu has some deal with NBC that's iffy with Merlin. When Season 1 was on NBC last summer, they could have it available. When Merlin was off of NBC, they couldn't show it. If Syfy is going to label it as 'theirs' you'd think they really would put into the series and not make audiences wait for it.
I like Merlin very much. I'm surprised it really hasn't even caught on here. Care? I feel like Luke. 'I care!'