I have an airport extreme creating a wireless network to share internet, printer and HDD with my MBP and mac mini. It's got all the default settings. Share single IP address with NAT etc. My MBP works fine until i switch on the mini, whereupon the mini will work fine but my MBP will change to "self assigned IP address". I am not dropped from the network at any stage... just nothing works anymore. I click renew DHCP lease like a 100 times and nothing happens. If i go to airport utility it won't let me retrieve the details for the extreme. If i leave it for 5min it will sometimes randomly work again. (the mini uses bootcamp and switches between vista and OSX, could this have anything to do with it?) Please help.