SB1 BSP 20 not connecting to wifi

We have an SB1 running BSP20.  It does not connect to a wifi network.  The AP is a Linksys WRT54GL configured with all security disabled, on mixed B/G mode, with broadcast on.  The SB1 is configured for an open network.  The area is crowded with wifi networks, but the SB1 is 5-15 ft from the AP and a wifi analyzer shows the AP as the strongest signal.  In Fusion, the SB1 shows the network name and (Connecting) next to Profiles.  Occasionally it switches to (Not Connected) with no network name and then repeats.