Sorry but it is funny.... (when it is not happening to me)!
Always funny when it's somebody else
Traced problem down to my Netcomm USB print server... the radio seems to reboot when it receives a UDP broadcast packet from it! Have notified distributer and they are trying to get a firmware update done to fix it.
Anyway, with the print server off I have it working, streaming from the uPnP server in MC and it all works nicely.
Only thing is the Artist: field on the diaplay says "not defined", so maybe the artist info isn't being passed from the server? Or I need a different uPnP definition (using the Soundbridge one, but didn try a couple of others.)
And as an added benefit, I get internet radio with an easy to use interface and digital radio as well!
Sound quality is ... well average given a single small speaker, but for the kids it's fine.
Richard