No, it is definitely WPA as I know the old airport cards only support that and WEP.

I've had the Superhub's wifi set to WPA-Auto and WPA-PSK but neither seem to actually get me online. I had issue with the model of hub before, but i discovered it was the WPS feature. After it was disabled the Pismo went on fine. When we got the new Superhub2, i went in and disabled the WPS first thing. But it's only now that I've tried using my Pismo.