It's still not working with bcmwl 6.30.223.141 on 201103-7379, with the same error message:
Sep 23 02:53:07 201103-7379 wpa_supplicant[1219]: Trying to associate with c8:d3:a3:68:99:43 (SSID='ubuntu-cert-n-open' freq=2462 MHz)
Sep 23 02:53:07 201103-7379 wpa_supplicant[1219]: Association request to the driver failed
However, I tried to downgrade the wpasupplicant from 0.7.3-6ubuntu2.4 to 0.7.3-6ubuntu2, and it works with the latest bcmwl driver (6.30.223.248+bdcom-0ubuntu0.0.2) and 6.30.223.141+bdcom-0ubuntu1 mentioned above.
It's still not working with bcmwl 6.30.223.141 on 201103-7379, with the same error message:
Sep 23 02:53:07 201103-7379 wpa_supplicant[ 1219]: Trying to associate with c8:d3:a3:68:99:43 (SSID=' ubuntu- cert-n- open' freq=2462 MHz) 1219]: Association request to the driver failed
Sep 23 02:53:07 201103-7379 wpa_supplicant[
However, I tried to downgrade the wpasupplicant from 0.7.3-6ubuntu2.4 to 0.7.3-6ubuntu2, and it works with the latest bcmwl driver (6.30.223. 248+bdcom- 0ubuntu0. 0.2) and 6.30.223. 141+bdcom- 0ubuntu1 mentioned above.
I will add wpasupplicant to the affected list.