Thanks for your help GONK. I went home at lunch and unplugged the 1050. Guess what? It re-set itself and is now o.k. Im back to 5.1 again. One note though, I tried the dvd with the mono sountrack and it locked up again. My only guess is that this dvd is sending a weird signal to the 1050 somehow and causing this. I un-plugged it again, waited, and now its back to normal. Guess I'll toss this dvd even though I like old westerns. Could sending a mono signal through the optical connection cause this??
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Randy