I have had my 970 since December and have never had a problem with it at all.
However, within the last week I have experienced what may be the "no audio" issue 4 times. Coming out of standby, to watch television (from satellite receiver - optical) i have had no audio. Furthurmore, it will not let me switch Dolby modes, nor does switching input sources help; I have to power the 970 off and on to get it to work.
I do not know if this happens with any other inputs.

I will try the new firmware when I get the necessary cable, but I was wondering if this sounds like what others have experienced. The 970 was fine for months, and then suddenly started having this issue.

Mike