I've heard the same sorts of things regarding the blurring, hesitatingly scanning of a scene or the same thing with quick motion scenes with a few DVD upsampling players.
My understading is the same as BR's here... According to the online press for the DV 83 SD DVD player Oppo put out, that anchor bay chip set is a keeper, eliminating this issue.
The upcoming Oppo BR Player is being released on a limited basis now via some sort of lottery... to those who subscribed previously at the Oppo website requesting info on the new Ray player. Following that, as I recall, another limited release will be ongoing with perhaps some changes given the feedback of the first hundred folks on their players.
Currently some limitations, such as no DVD A playback for now, is also one item of note. Reportedly this will be addressed via a firmware update shortly.... or so the news letter I got said, more or less.
So it is coming now... just not quickly or completely it would seem.