I have a low power PHY not yet supported by b43 driver:

# lspci -n
03:00.0 0280: 14e4:4315 (rev 01)

# lspci
03:00.0 Network controller: Broadcom Corporation BCM4312 802.11b/g (rev 01)

When using wpa_supplicant or wicd(which uses wpa_supplicant anyway) on
WPA/WPA2 secured networks, everything looks fine, authentication succeeds but
then I'm unable to get IP address with dhclient.

It works for all the unsecured networks I met and very few secured ones, but
with about 80% APs I get this weird error. I even successfully authenticated
with the bloody EDUROAM at university with this sad ending.

Same with various kernels from 2.6.26 (i think) to 2.6.32 and
wpasupplicant 0.6.10-2 (testing/sid) and 0.6.4-3 (stable).

Any hints how to find out what the hack is going on are most appreciated!