Patrick,

I'd also suggest a re-type and if that didn't do the trick then a re-load of the firmware.

The guy I sold my 568.2 contacted me to ask why it popped when he changed volume. Obviously, I was concerned as it had never done that but he was using the balanced o/p and I was on the digital side.

M told him to reload firmware and "hey presto"...problem fixed.

Rgds,
Nick