Ok I only just found this but it says the exact opposite of what the last one a dit so now I don't know what to believe =( This is from Miracle herself on her Facebook page par the way.
Josef Adalian at TV Week News goes plus in depth as to why the set of Dollhouse is shutting down for a while. Apparently those bastards at renard are concerned that Echo isn't likable enough and that the story isn't broad enough.