WPA associates, but no encryption in iwconfig?

Hello,

I recently had to replace my motherboard so I went ahead and re-installed Linux to avoid any problems that may arise. I switched from Gentoo to Debian because I'd had no problems setting Debian up on my laptop and don't have time to go through all the intense setup of Gentoo again right now. After re-installing, however, I ran into problems getting the machine to work on my apartment's router. If it were just me living here, I'd turn off the encryption until I could figure out what the problem is, but the guy I'm renting from insists on leaving WPA up...

Ok, basic problem: wpa_supplicant connects to the router, the psk gets accepted, but then when I try to get an IP with dhclient, I can't get a dhcpoffer response from the router.

First, here is my wpa_supplicant.conf:

ctrl_interface=/var/run/wpa_supplicant

network={
ssid="linksys"
key_mgmt=WPA-PSK
proto=WPA
pairwise=TKIP
group=TKIP
psk="(my key here)"
}

In case you're wondering, its one of the sample ones included in the documentation with my apartment's ssid and password entered in. I used the same one before in Gentoo, and I'm using it right now on the laptop I'm typing this on (which is also running Debian). The laptop connects with wpa_supplicant and gets an ip through dhclient rather quickly.

So I compared the output of iwconfig for both, and I've noticed that the problem machine lists Encryption as "off" while my laptop has a long alphanumeric key. This leads me to believe that somehow encryption has been disabled on my problem machine, which is preventing it from communicating properly with the router and getting an ip with dhclient.

Once again, I'm using the same WPA configuration file and driver (DriverLoader with RT61 driver for a Linksys WMP54Gv4.1) I used in Gentoo. When I load the driver, dmesg says that WPA is encryption is supported. I'm now sure where to go from here, but I'm losing my patience. Please help!