Environment: Home network of 14 computers 6 Macs, all running ML 10.8.3 6 Windows machines, all running Windows 7 2 Linux machines, Ubuntu 12.04 and Fedora 18 Airport Extreme (7.6.1) Problem: The Macs, and only the Macs, are requiring that the WiFi be turned off and then back on again in order to restore connectivity. The connection is not "officially" dropped, meaning the OS never claims to be disconnected, but all network traffic (internal and external) stops working until the Off/On cycle is done. There seems to be no pattern to the amount of time between each occurrence of the problem, but no Mac has been able to maintain connectivity for more than a few hours before requiring the WiFi to be turned off and on. The Windows and Linux machines do not have this problem. The Macs are not all in the same room or area. The Macs do not all lose connectivity at the same time. This problem began happening about a month ago; no issues before then. Any ideas? Thanks.