I am using MacBook Air 2013 Mid Year edition and it had Wi-Fi issues in the beginning later it was fixed with a patch. Now it started showing again after 10.8.5 update. Wireless is connected with full range and MBA can't connect to Internet. This is quite visible when it turns and login from sleep. Is there any workaround for this?
I think i'm having the same problem but just to check if it's the same:
OS 10.8.5 (i5 8GB 2013)
1) Wifi is connected and working
2) Close the lid/sleep
3) Open the lid/wake
4) Wifi at first says disconnect/looking for network.
5) Wifi connects but says "alert no internet connection"
6) To reconnect, wifi must be switched off then back on