broadcom 43xx device cannot find networks

[d3r_daniel]

hi,

after a long time, i just got to install the 43xx drivers for my dell wlan card.
the led turns on during boot and everything seems to be fine; but:

at iwconfig it says that the bit rate is 11mbps. it must be 54mbps... is there anything wrong.
using kwifimanager the card gets detectet, but scanning for networks gets njo results (in windows and slax if finds my neighbours AP).

whats wrong?

thanks for answers..

regards,
daniel