I don't know this for sure. It certainly isn't a fact. And I definitely haven't researched this one bit.
However, while watching the last episode of series 2 of Flight of the Conchords, it definitely seemed like an end to the whole show. Sudden enough too. I wont spoil the plot for anyone, but thats the vibe I got from it.
Granted the first season was better, but thats the norm with any show!
Isn't this usually the sign that a show has been canceled?
Does anyone have any idea whats going on with the future of the show? Concentrating on liveshows perhaps in America with their new mainstream audience?