I have a MacBook Air and have had, it seems, most of the wireless network connectivity issues I've seen reported here and in other forums.
My issue was that while my two Windows laptops happily remained connected to my wireless network, my Air would connect and then drop the connection - to such an extent that I could not complete an Apple software update because it wouldn't stay connected long enough to complete the download.
I think I have solved this problem using AirGrab WiFi Radar utility to show me my neighbour's various WiFi networks and in particular the channels they are on, and by explicitly setting my router to use a distinct channel.
But having done this and added and deleted WiFi connection settings repeatedly (including as advised in various posts from the Keychain and the preferred networks list - and even changing the name of my network to something I haven't used before) the Airport will no longer reconnect to my wireless network.
If I reboot the Air it connects happily (I have "remember any network this computer has joined" ticked in advanced network settings). But if I take the Air out of range and then bring it back, or if I turn the router off and on again, or I simulate this by turning the airport off then on, it does not reconnect. If I click on the drop down symbol it shows the network name as detected but stubbornly does not reconnect automatically. If I click manually on the network name it immediately connects (with no prompting for passwords).
I'm using a Netgear Wireless N WNR-2000 router (but in my desparation have tried 4 other routers as well including an Apple Time Capsule and ones made by Linksys and D-Link - and I have the same problem with them all).
I'm using WPA/WPA2 security.
Any suggestions? (I've read so many post in the past few days and tried a whole variety of settings, I can believe there's a setting somewhere else that I've forgotten about!)
My issue was that while my two Windows laptops happily remained connected to my wireless network, my Air would connect and then drop the connection - to such an extent that I could not complete an Apple software update because it wouldn't stay connected long enough to complete the download.
I think I have solved this problem using AirGrab WiFi Radar utility to show me my neighbour's various WiFi networks and in particular the channels they are on, and by explicitly setting my router to use a distinct channel.
But having done this and added and deleted WiFi connection settings repeatedly (including as advised in various posts from the Keychain and the preferred networks list - and even changing the name of my network to something I haven't used before) the Airport will no longer reconnect to my wireless network.
If I reboot the Air it connects happily (I have "remember any network this computer has joined" ticked in advanced network settings). But if I take the Air out of range and then bring it back, or if I turn the router off and on again, or I simulate this by turning the airport off then on, it does not reconnect. If I click on the drop down symbol it shows the network name as detected but stubbornly does not reconnect automatically. If I click manually on the network name it immediately connects (with no prompting for passwords).
I'm using a Netgear Wireless N WNR-2000 router (but in my desparation have tried 4 other routers as well including an Apple Time Capsule and ones made by Linksys and D-Link - and I have the same problem with them all).
I'm using WPA/WPA2 security.
Any suggestions? (I've read so many post in the past few days and tried a whole variety of settings, I can believe there's a setting somewhere else that I've forgotten about!)