hi! i just got an airport extreme card and a airport extreme base station. my card has been acting weird whenever ive been connected on any wireless network. i will get the " you have to restart your computer " screen whenever i move my computer a tiny bit while connected to the wireless network. i will have to restart my computer and everything will be working fine again. this doesnt happen if i just sit with my computer completely still at my desk, but the moment lets say i sit with the powerbook in my lap it might happen any minute, or if i just pick up my powerbook and walk around with it. i read about the problem at the support pages, and it says it is most likely a software problem (i dont think it is as ive reinstalled my OS). what might be the problem here? i know its not the base station as ive been on several different networks. so i guess it might be the antenna in the computer itself of the actual airport card. ok, any help would be excellent. thanks.