Same problem with the madwifi drivers, they can see the networks, but cannot connect to any of them (they all have WEP or WPA enabled). I haven't been able to test with a network without security.
njp@Neils-MBP:~$ sudo iwconfig
wifi0 no wireless extensions.
ath0 IEEE 802.11g ESSID:"" Nickname:"" Mode:Managed Frequency:2.437 GHz Access Point: Not-Associated
Bit Rate:0 kb/s Tx-Power:14 dBm Sensitivity=1/1
Retry:off RTS thr:off Fragment thr:off Encryption key:off
Power Management:off
Link Quality=0/70 Signal level=-96 dBm Noise level=-96 dBm
Rx invalid nwid:2920 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
Hardy 2.6.24-12 NM-0.6.6 Madwifi svn r3367
Same problem with the madwifi drivers, they can see the networks, but cannot connect to any of them (they all have WEP or WPA enabled). I haven't been able to test with a network without security.
njp@Neils-MBP:~$ sudo iwconfig
wifi0 no wireless extensions.
ath0 IEEE 802.11g ESSID:"" Nickname:""
Mode: Managed Frequency:2.437 GHz Access Point: Not-Associated
Encryption key:off
Bit Rate:0 kb/s Tx-Power:14 dBm Sensitivity=1/1
Retry:off RTS thr:off Fragment thr:off
Power Management:off
Link Quality=0/70 Signal level=-96 dBm Noise level=-96 dBm
Rx invalid nwid:2920 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
====
njp@Neils-MBP:~$ sudo lshw -C network
capabilities: pm msi pciexpress msix bus_master cap_list logical ethernet physical wireless
configuration: broadcast=yes driver=ath_pci latency=0 module=ath_pci multicast=yes wireless=IEEE 802.11g
capabilities: pm vpd msi pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=sky2 driverversion=1.20 duplex=full firmware=N/A latency=0 link=yes module=sky2 multicast=yes port=twisted pair speed=100MB/s
*-network
description: Wireless interface
product: AR5418 802.11abgn Wireless PCI Express Adapter
vendor: Atheros Communications, Inc.
physical id: 0
bus info: pci@0000:0b:00.0
logical name: wifi0
version: 01
serial: 00:1b:63:cb:69:99
width: 64 bits
clock: 33MHz
*-network
description: Ethernet interface
product: Marvell Yukon 88E8058 PCI-E Gigabit Ethernet Controller
vendor: Marvell Technology Group Ltd.
physical id: 0
bus info: pci@0000:0c:00.0
logical name: eth0
version: 13
serial: 00:1b:63:95:df:f8
size: 100MB/s
capacity: 1GB/s
width: 64 bits
clock: 33MHz