Hi, I'm writing this here to avoid people wasting their time as I did. The recent airport firmware upgrade to 7.7.3 caused my SL server to disconnect from the wifi network and refuse to re-find the network. Even forcefully typing in the network and password failed. I tried various option spotted in various forums. Even went as far as fixing key chain (which probably got corrupted due to my multiple tests). Finally I found the answer ! Use AIRPORT UTILITY 1. select the correct device (a TM in my case) 2. rename the network; say from MYNETWORK to MYNETWORK2 3. restart the device This solved my problem. The server could see the new network and connect. But to return to normal I reconnected to AIRPORT UTILITY and set the network back to the original name. And things reconnected as normal. I truly don't know what Apple did in 7.7.3 (I think heart bleed), but testing was obviously not a major concern. Anyway, I hope this helps people.