I was wondering things like, "Who's music library is that?" Somebody said, "Probably a neighbor's." I said, "But our Internet is supposed to be secured by an encrypted password."
To my horror, I found that the main wireless access point/router on the 2nd floor had been somehow reset. It was named "linksys" and available for all the world to use. What a shame! Even worse, it would've been easy for someone connected to it to wreak havoc over the network and lock us out for a while until we could reset everything.