Wi-Fi Disconnected

My eDGe won't connect to my router anymore. It still finds the network, which sits at the top of the list and says "Remembered, secured with WPA2." If I click on it and tell it to connect, it doesn't do anything except change the WiFi status to "Disconnected." This issue started just a couple days ago, it used to work fine. Power cycling the eDGe/router does nothing.

My router is a Linksys WRT54G2. I have the latest firmware, WPA2 Personal encryption, and it's on channel 11. My open network at school works fine, so I tried to remove encryption, but that didn't change anything.

Anyone have any suggestions?