I have a white c2d iMac. When I updated to Leopard, the firmware of the airport extreme gained the ability to connect to 802.11n. I have been using Leopard since its release, connecting to my 802.11g network with no problems. I recently upgraded my router to wireless n (D-link DIR-825). Ever since the upgrade I have periods where I will lose my connection for about 10 secs at a time, although the airport menu bar always shows a connection and the network utility shows no dropped packets. I researched the problem thoroughly, and tried every different configuration on the router I could think of. I even did an erase and install of Leopard. I have now come to the realization that this only happens when I connect on the "n" band. I have tried both 2.4 & 5 Ghz frequencies with the same results. The only way I can get a stable connection is by connecting on the "g" band. Is there any kind of bug with the airport firmware update that would be causing this? I am out of ideas and have pretty much given up on the "n" connection.