Thanks Shay,

I can rule out the card in the laptop not working properly because I have another mac with a card installed that does the exact same thing as the laptop (i.e. when the laptop is not connecting, that computer is not connecting, when the laptop has a fuzzy signal, the computer has a fuzzy signal). Both computers get there signal from the Airport Extreme base station and normally they are both about 3 metres from it.

Have you installed the Airport Firmware updates?

I'd also try poking its reset button and reconfiguring it from scratch.

Good luck,
Shay (wondering hopefully why the iTunes music store is offline at the moment :)
--
=========================== Shay  Telfer ================================
 Perth, Western Australia   Technomancer  Join Team Sungroper in the
 Opinions for hire              [POQ]     2005 World Solar Challenge
 http://public.xdi.org/=Shay    fnord     <http://sungroper.asn.au/>