Only Worked Once...

["S D" <sd codewarrior gmail com>]

I have a Lenovo T61 with an Atheros 5212 card running Fedora 8 on a Maxtor external USB hard drive. I boot off of the USB hard drive and everything has been working fine except that I can't get the wireless connection to consistently work. I have installed NetManager and madwifi and have been able to successfully connect to a WPA access point (requiring a password) exactly once. My /etc/pam.d/gdm file looks like this:

#%PAM-1.0
auth [success=done ignore=ignore default=bad] pam_selinux_permit.so
auth required pam_env.so
auth optional pam_keyring.so try_first_pass
auth include system-auth
auth optional pam_gnome_keyring.so
account required pam_nologin.so
account include system-auth
password include system-auth
session required pam_selinux.so close
session include system-auth
session required pam_loginuid.so
session optional pam_console.so
session required pam_selinux.so open
session optional pam_keyinit.so force revoke
session required pam_namespace.so
session optional pam_gnome_keyring.so auto_start
session optional pam_keyring.so

and my gnome keyring (what a quirky and user-unfriendly program) password and my login password are identical. According to the suggestion found here

http://paulsdigitalworld.blogspot.com/2007/11/ubuntu-fedora-linux-hardware-working.html

I moved /etc/rc5.d/S12wpa_supplicant to /etc/rc5.d/S94wpa_supplicant 

Since my one successful connection I have had no luck. Whenever I attempt to connect, a
window pops up asking for the WPA password; I enter the correct password,
it churns for a minute and then asks for the password again. 

Any suggestions are appreciated. Thanks!