I've generally had OK luck with this player. Lots of stuff that wouldn't play initially, but did after firmware updates. Generally my problems have been with "the latest" titles - Iron Man, Avatar, Wolverine, etc, but did clear up after firmware updates.
But recently I've had a slew of issues, on somewhat surprising titles. Superbad, Julie and Julia, Galaxy Qwest. None of these seems to be particularly new or advanced. I even tried downreving firmware, but still had issues. Symptoms seem similar - I can get the top menu to play, but at that point none of the buttons seem to work. Occasionally I can get "stop" to work, but once I hit play again then all buttons fail. So even though the top menu is visible, music is playing, etc, you cannot ever select the "play" option to start the movie. Even the power and eject buttons on the physical player do not work. So at this point the only option is to disconnect the power cord and restart.
Anyone else having similar problems?