So, my iMac (G5) keeps losing it's wireless connection: not entirely, but the menu bar indicator will go from full strength to one bar and virtually all traffic will come to a halt. Also, the transmission rate will be severely reduced, usually around 11 Mbps compared with the usual 54 or 48, and often times will fail to recognize other networks in the neighborhood. Also, more than once when this has happened, the airport menubar icon will freeze (i.e. I'll place my mouse over it, click, and nothing happens: only the spinning beach ball). I can't imagine it's a problem with my Linksys WRT54G2 router, as it was just replaced and the problem persisted. Typically, these symptoms are a tell tale sign of interference, but I tried moving my computer to the other side of the house, as well as changing the wireless channel, but the problem persisted. Plus, in its current location I can't locate any devices that could be a source of interference (same goes for the room with the wireless router). As a final nail in the coffin, the two other wireless devices in the same room (my MacBook and wifi printer) will continue to send and receive traffic (their signal might be reduced a little, but it's hard to know for sure). Any help is greatly appreciated.