OP, what firmware are you running? I have the 3TB (and a Boxee!) and with firmware v03.04.01-230 I don’t have any streaming issues. I briefly tried v4 firmware, but it was horrible. Also, I disabled the crippling services.
As an aside, WD really needs to pull their heads out, admit that the product as it stands is a failure, and start removing the “features” that make this thing broken. Indexing…kill it now, WD.