Last Sunday, Comcast, unbeknownst to me, and without my permission, turned on a wifi hotspot in my house (in north Atlanta). Causing all sorts of wifi connectivity problems. A new network appeared called xfinitywifi. Did Comcast find a channel that didn't cause channel conflict? Of course not. Channel one. Not knowing what Comcast was up to, I assumed my Airport had failed and spend a couple hours swapping it for a new one. Of course, same problem. Finally resolved the channel conflict and all is working Ok now. But thanks Comcast for ruining my Sunday.

tl;dr Comsat did this to me. Learned how to change wifi channel on my router