hola i had the same problem with a pcmcia with atheros chipset firstly check in a console type su and your passwords type iwconfig you ll see ndiswrapper broadcom or zydas (see the check list on http://ralink.rapla.net/) uninstall it type urpme (for example) ndiswrapper go to install software management in the mandriva's configuration centre. type madwifi and wpa supplicant and follow the instruction bye