I got a Linksys WMP54G wireless card for my kids' computer the other day. In my efforts to get it working, I upgraded my copy of Slackware 12.0 to the 2.6.25-rc8 kernel (compiled from source) and wpa_supplicant 0.5.10. I edited the /etc/rc.d/rc.inet1.conf and got everything to work--even with WPA-PSK. The only problem is when I first boot. I get this error thrown into messages:

Apr 2 12:04:26 boyz logger: /etc/rc.d/rc.inet1: wpa_supplicant -Bw -c/etc/wpa_supplicant.conf -Dwext -iwlan0
Apr 2 12:05:30 boyz logger: WPA authentication did not complete, try running '/etc/rc.d/rc.inet1 wlan0_start' in a few seconds.

If I run "rc.inet1 stop" and then "rc.inet1 start" when it's done booting, everything works fine. Is there some way I can get this to work the first time through?

Found the answer to my own question. The problem comes in because I don't have my router broadcast its SSID. I had to add this line to /etc/wpa_supplicant.conf in the network section:

scan_ssid=1

Works like a charm now!