I have KDL-43WF663 and all has been OKAY but now cannot get iplayer nor catchup nor "start from beginning" to work - I get message "something went wrong playing this programme". yes I have latest software - yes have checked internet connect (in fact reset it). I can get iplayer fine on laptop through same internet box. About 4 weeks ago I did a complete factory reset and it all functioned again -but 2-3 weeks later  it has stopped again