It pretty well demonstrates that the DSL modem/wireless router that Qwest provided (2Wire is the manufacturer) either is defective or doesn't work well with Macs. I renamed the SSID on the wireless to xxx2 (no, I'm not telling you my wireless config), and plugged in my little DLink 524 and named it to my original SSID. So my DSL router has a second wireless router plugged in to it. My laptop has been pretty stable in terms of wireless access while using the DLink. Now I just have to see about getting Qwest to replace the 2Wire unit.