We keep getting our neighbor's network to appear on our machine, and he is probablly getting our network on his machine. I obviously want to stop this because it's affecting our internet access negatively. We've tried moving the airport to a more central location (we have three machines). Also, when I called apple they told me to a) change the percentage range of the airport, which we did and b) to password the airport channel, which it already was. What else can we do? Does anyone else have this problem with their airport?