Ath5k & WPA problematisk

Jeg prøver at oprette en WPA-krypteret forbindelse med PSK på en Slackware 12.2-installation, der bruger Ath5k-driveren. Lspci siger, at jeg er i besiddelse af:
02:02.0 Ethernet controller: Atheros Communications Inc. AR5211 802.11ab NIC (rev 01).
Konfigurationen virker uden de store spørgsmål, når jeg bruger Madwifi-driveren, men bliver problematisk med Ath5k. Når jeg kalder wpa_supplicant, får jeg en masse af dette her:
morten # wpa_supplicant -Dwext -iwlan0 -c/etc/wpa_supplicant.conf
ioctl[SIOCSIWAUTH]: Operation not supported
WEXT auth param 4 value 0x0 - ioctl[SIOCGIWSCAN]: Resource temporarily unavailable
Trying to associate with 00:1e:e5:43:d4:96 (SSID='jjzf' freq=2462 MHz)
Associated with 00:1e:e5:43:d4:96
CTRL-EVENT-DISCONNECTED - Disconnect event - remove keys
ioctl[SIOCSIWENCODEEXT]: No such file or directory
Associated with 00:1e:e5:43:d4:96
CTRL-EVENT-DISCONNECTED - Disconnect event - remove keys
ioctl[SIOCSIWENCODEEXT]: No such file or directory
Associated with 00:1e:e5:43:d4:96
CTRL-EVENT-DISCONNECTED - Disconnect event - remove keys
ioctl[SIOCSIWENCODEEXT]: No such file or directory
Associated with 00:1e:e5:43:d4:96
CTRL-EVENT-DISCONNECTED - Disconnect event - remove keys
ioctl[SIOCSIWENCODEEXT]: No such file or directory
Associated with 00:1e:e5:43:d4:96
CTRL-EVENT-DISCONNECTED - Disconnect event - remove keys
ioctl[SIOCSIWENCODEEXT]: No such file or directory
Associated with 00:1e:e5:43:d4:96
Jeg har kigget mig lidt omkring, og det ser ud til, at der er andre, der har fået Ath5k til at køre med en krypteret forbindelse, men også en del, der deler min problematik.
Er der nogen af jer, der har erfaring med dette her?