I saw this thread as well STR DE 575 thread Is this a common problem? Should I be worried? I'll try unplugging my unit tonight to reset it, otherwise what is going on here? I watched a DVD Sat night, played CDs yesterday in the morning, turned it off, tried to watch TV last night and only can get sound from the SAT using "2 ch analog". The DVD and CD will show UNLOCK on the reciever in some situations. I'm so annoyed because this thing is only a month old.