I have finally replaced my rokus which ran mythroku foir me for several years. I got a hd-pvr and this records hd from directv in mythtv in H.264 which cannot be played back by the roku. I picked up cheaply an asus oplay and patriot pbo which handle these files through upnp well. I don't have commercial skipping or the ability to schedule but they are silent, tiny, and do have a 30s ffw so all in all it is not too bad. It seems that the forum is very quiet these days and I am not sure if there are any mythroku users left.
James