Strangest thing, I updated to the latest plugin version, 2.21, and upon activation the plugin, and any trace of it, disappeared. It's not in the plugins page, the widget is completely gone, and it's not in the editor and all associated settings are gone. But whenever I try to reinstall it I'm told that it is already installed. So I can't install it because it is installed, and I can't uninstall it because it doesn't exist. Everything worked beautifully until the upgrade.
http://blog.briancoale.com
Wordpress 2.9.2
Login with Ajax 2.21
In the javascript debugger a script for login with ajax doesn't seem to exist.