I failed to remember competition for utilized WIFI channels. I have updated my list of big hitters, above, accordingly.I'll put this out there and then let it to rest it sounds like were just putting way too many possibilities out there, You can download an android app just called wifi analyzer, I use this sometimes at work, it well tell you what channel everyone is around you and the signal strength. Look at all the channels and set yours to a channel away from them. I'm guessing you know how to do this but if not type in 192.168.1.1 in your browser, I think you said its a Linksys, so user name and password are both admin. I totally forgot my boss gave me a trilithic wifi analyzer meter, gotta mess around with it, sometimes this stuff is fun other times a pain..
Enjoy,
Rich P