I've had my (rev. B) G5 iMac since August of 2005. My dad didn't want to pay the cable guy a couple hundred dollars to run a cable up into my room, so I have been relying on the wireless Airport connection. Everything was working fine for the first year or so, but the last few months the connection has gotten very poor. Sometime I will be getting a good connection but suddenly the signal will drop from 4-5 bars down to 2 bars (like now) and I will get a very slow connection on none at all. Sometimes turning Airport on and off temporarily fixes the system but sometimes it just goes back to two bars with a slow connection. Are there any tests I can do to check if the card is functioning properly? I don't think it is the connection since I can play my DS online with little problem from downstairs. It could be the location, but that doesn't make sense since I received a good connection for so long. I am using Time Warner Cable with a Linksys router. Thanks!