Comment 60 for bug 732677

FWIW, manual configuration works on Natty:

$ sudo modprobe b43 brcm80211
press kill switch once to enable wifi
$ sudo ifconfig wlan0 up
$ sudo iwlist wlan0 scan
pick a wlan ssid
$ sudo iwconfig wlan0 essid "wlan_ssid"
$ sudo dhclient wlan0

but somehow network-manager cannot talk to the device.