OK. So I have had my BS4 back for a week now with no shut downs occurring, with or without the Apple Airport Express (AAE) connected. Maybe it was the AAE after all. Having it off for the week has fixed the problem. (I also reconfigured my AAE with new wireless settings)
Anyway I don't think the fault was with the B&O BeoSound 4.
Faith is now restored. I blame Apple and its dodgy OSX 10.5.1 operating system.
