hi,
i am using wpa_supplicant on etch with the same card and it works fine on a linksys router.I have an intel 3945 wireless card, installed wpa_supplicant (via apt-get, debian etch installation).
i have the exactly opposite experience - it didnt' work with WEP but works fine with WPA.The configuration for WEP works, but for WPA I never get an ip address from the DHCP server.
the relevant part of my /etc/network/interfaces reads as follows: allow-hotplug eth2 iface eth2 inet dhcp wpa-ssid SSIDNAME wpa-psk xxxxxxxxxxxxxxxxxxxxxxxxx (the passphrase 'hash') wpa-driver wextthat's actually all and it works fine for me without any additional parameters.
regards, -- Lubos _@_" http://www.lubos.vrbka.net