MacGeekry has just published
a truly epic post discussing best practices for maintaining a strong and relatively interference free AirPort Network. The article, full of pretty graphs and shiny charts, explains how to use three free programs to check your network for issues, and how to fix any issues you might find. Although intended for owners of AirPort base stations, I imagine much of the information in the article applies globally for all wireless routers and access points. I haven't tried any of the suggestions yet, as I'm not at home, but I'd be interested to hear from you readers if this stuff really works.