Quoting Manuel Bouyer (bouyer@antioche.eu.org):
> On Wed, Dec 11, 2002 at 07:39:28PM -0800, Philip Brodd wrote:
> > Ha, this shows my attention to detail :^)  The cable does appear to be seated
> > snugly in both the card and the base station, however.  I also tried a few
> 
> It's connected to the airport base station ? Are you sure the port
> is not MDI-X instead of MDI ?
> If so, it would require a crossover cable.

Airports are a regular 10baseT connection.
Toss a hub in to debug a bit.

And you can sniff a hub.  Don't have a hub?  Look in most dumpsters.
They are like mushrooms.

Lacking a hub or switch, you need a crossover cable between airport
and machine.