My Samsung BD player froze several times whilst playing the Harry Potter Deathly Hallows disc. Don'y know if the machine is developing a fault or there is a known issue with the disc. I had to power off the machine, then power back on and use the chapter feature to find the right part of the movie. First time I've had any problem with this player.
My L.G.650 for European use , Great PQ
And my Toshiba 1200BDX multi -region blu-ray and multi - region dvd ( Aust Firmware ) for Locked Titles from across the big pond ...
Currently have a PS3 (primarily used for gaming these days though), Sony BDP S-370 for Region B's and have recently bought a Toshiba BDX3200 and upgraded it's firmware to play Region A's and all region DVD's.