To break 128bit WEP, it takes about 4gigs of data. So depending on how heavy WiFi is used in your area, it actually is pretty easy. Someone just has to sit somewhere they can get a signal, capture data, leave, run a utility, come back and be on your net.

I sent one of my guys to security school, and WEP was covered. They actually sent the students war-driving.

New technologies are on the way or here that will help.

curtis