MacBook Air DHCP Problems Resolved
Macbook Air suddenly stopped allowing DHCP connections both via airport as well as with the usb to ethernet adapter. A self assigned address was obtained on both network connections. I resolved by turning off my firewall which had been working prior to this sudden problem. I had "set access for specific services and applications" selected as I travel a lot. Hopefully apple fixes this bug as soon as possible.
MacBook Air SSD, Mac OS X (10.5.4)