Yeah, when a Farscape episode is bad it's usually down to the whole thing just being boring. That one with the evil space wizard springs to mind. It's almost like an old episode of 'Doctor Who' in that there's a lot of talking and urgent running around, but not a lot actually happens. Or at least that's how it often felt. One of the drawbacks of being a show willing to push boundaries and try new things is that the risk of failure is always greater.
Oh and folks, we're getting dangerously close to spoiler territory, so how about we either use tags or just refrain from discussing episodes the OP hasn't seen yet?