This is a known problem with the base stations... in order to fix it, you have to wrap a sheet of aluminum foil around your head, squawk like a chicken, and chant "EVE-STAY OBS-JAY IS-AY OOD-GAY!", facing the sun, as loud as you can, 10 times. 🙂 You also have to post pictures of yourself doing this on Macrumors, otherwise the problem will reappear within one week.