I had some issues setting up the Airport Extreme 802.11n Base Station I recently bought. Even though I don't have any 802.11n devices, I wanted it to run in that mode in case I get anything in the future. Since I have some wireless devices that only support WEP, I'm using WEP (Transitional Security Network) for wireless security. I'm not sure if this is due to something odd in Apple's implementation, but my Powerbook G4 is only able to connect to this when using WPA even though one of my wireless devices can connect to it just fine using 128bit WEP.
One of my other devices can't connect to it using either WEP or WPA, so I'm still using my old Graphite Airport Base Station to support that.
