I have a MacBook Pro (2.33 GHz Core 2 Duo) running Leopard. I access the Internet via AirPort to an Airport Extreme. And I am stumped. A few days ago I booted the machine and saw that the wireless connection wasn't working. Odd. My iPhone sees the network. And the MBP can find and use wireless networks at work and school and the library. But not my home network. Interestingly, the MBP also cannot see any of the other wireless networks that my neighbors are running that it used to identify. When I go through Network Preferences and specify the network (802.11n) using WPA and authentication, the connection times out looking for the network. I've checked the AE configuration and nothing has changed there. Wired access with my desktop Mac and the MBP works fine. Any thoughts out there?