One way to get more information about your Wi-Fi connection problems is with the use of the Wi-Fi Spy Spectrum Spy Signal Analyzer. It connects to your laptop or desktop computer via USB, and uses its software based analyzer to help you pinpoint the problem.

I once spent the better part of a day trouble shooting my wi-fi connection, desperately trying to find a channel that wasn't already claimed. If I had this little gadget it would have taken me only a few minutes. At $200 this is probably a bit too pricey for folks who will only use it once at home- but for frequent travelers and network techs this is a great little tool. The included software creates a visual display of traffic for all Bluetooth, 2.4 GHz cordless phones, microwaves, Zigbee, and all other 2.4 GHz transmitters.