I have a BP735 and had the black (or ls it white?) line problem for many months. I checked again yesterday and now I get a webpage saying "404 - File or directory not found. The resource you are looking for might have been removed, had its name changed, or is temporarily unavailable." Not sure if this is a good or bad omen. My LG software is up-to-date.
I have an Onkyo with internet radio now so it's not the end of the world for me, but vTuner was one of the principal reasons I went with LG. I hate consumer electronics (I do love the Onkyo tho)!