Had network problem with 4310 (purchased from BB in Jan/2010) and shipped via BB to service center. Haven't received it back yet but an inquiry about the type of service done claims nothing was wrong with the unit, unit working as shipped from manufacturer. When I bought it, the unit worked fine for 3 months and then the network feature died (no internet radio, cannot even connect to the USB-plugged iPod since this connection comes under network sources). I would get a message saying "Please wait, Connecting to network..." and the receiver would just hang there forever.
Is there a way to reset the "network unit" in 4310 like the hard reset done on the processor? There was a post about doing this in 3310 but not sure if the same applied to 4310.