Hi Roger, actually the Receiver needs to be connected to the Router and at the moment I cannot replace that. One might think that as Netgear have their own music player now maybe this is sapbotage.

What I have discovered is that if I put a simple hub (Also Netgear in fact) in between the Receiver and the switch it works perfectly. What I also found is that if once the link is established I then take the hub out of circuit (i.e. Receiver now connected directly to the switch) the Receiver continues to work. If I then reboot it by hitting the power switch 3 times it maintains the link, but if I pull the power and re-connect then it fails to link on the next start.

My conclusion from this is that it seems to be a problem with the actual ethernet subsystem of the Receiver, not that that really helps me:-( I would also hazzard a guess that it is something to do with Autosensing speed or the Auto Uplink capability of the new switches. Can anything be done about this, apart from using an additional hub?

I think the older flat blue devices are still available, but as these particular units needed to be in my garage I preferred the rustless plastic of the new designs, not such a good idea it now seems:-(