How does one test the signal strength on a Time Capsule and how does one know how strong it should be? I mean I know about the four bars display, and I have even searched for signal graphers, but I can't find anything that really does the job, or give you any hard information that can be easily understood. My problem is I just replaced my Linksys (wireless g), setup with the Time Capsule (wireless n), and everything seems to work fine, except every once in a while I only get three bars on the Airport menubar widget. And I am using a brand new MacPro workstation set up barely 8 feet from the Time Capsule in the same room. And there is not much in between me and the Capsule. I got a utility called AP Grapher which seemed to be the best of a bad lot, but while it gives you some neato graphs, it doesn't really have anything that allows you to interpret what you are seeing if you don't already know all about this stuff. How do I know how high a line needs to be to be "good." I am not an idiot so the "four bars" icon is a little too simple, but I am not a geek either and don't have the time to understand industry standard metering processes etc. Isn't there something useful in between these extremes? Something graphical?