Just picked up the adaptor today and thought it was pretty much a no brainer: plug it in, it works. Not in this case, it keeps getting a self assigned IP address and I can't connect to the internet-although there is a green light next to the ethernet adaptor in System preferences. I have an Airport network set up as a normal scenario. I bought this adaptor only because I am about to take a trip and the hotel only has ethernet in the rooms. I've tried using the diagnostic tool, but it keeps hanging and crashing. Can anybody help? Is there some special configuration? Thanks very much in advance.