Hi,
I have 2x RPi setups, and I keep coming back to them locked up or locking up soon after navigating the menus.
I then pulled the power from the Pi and did a hard reboot, once loaded used a iPhone app remote (official) to find a film, once found selected to play and the Pi once again locked up.
I have since enabled debug logging so will update if it locks up again I will update the post.
Regards,
Feeps