Allow me to pile on this bandwaggon! I too have had the aforementioned problem with LOTR TTT disk. I've turned the rear center channel "on", even though there is no speaker, and turned the 6.1 surround mode off but the unit automatically switches to and stays on the 6.1 mode after about 10 seconds of operation. Unfortunately, this substantially reduces the amount of sound coming from the two rear speakers. In other words, the rears sound great in 5.1 mode, not so good at all in 6.1. The only work around I've found is to pump up the surround trim to around +9db (normally set at around something like -1db). A major bummer indeed as I then have to reset the rear trim to listen to other programming. Fortunately, this is the only disc I have where I have encountered this problem. Not to excited about the prospect of having to buy and wire yet another speaker to solve the problem either!

Larry