Sometimes, like once per 20 minutes, internet suddenly stops working on my Mac. If I turn AirPort off and then on, it becomes working again.
With the same frequency, internet stops working on my iPod touch. If I turn wi-fi off and then on (or airplane mode on and then off) it becomes working again too.
I think it has something to do with my router preferences. But I have no idea where to look, please give me a clue!
My router is Asus GT-32, Firmware Version: 22.214.171.124