Sorry for the delay on updating, but Login LockDown 1.2 has now been released. I fixed the issue that was causing it to not function correctly with WP 2.5 and up.
Version 1.2 is not backwards compatible, so anyone needing the plugin for WordPress 2.3.3 or earlier will have to use version 1.1. I provided links to both versions on the download page, however, as I mentioned there, if you are not running WordPress 2.5.1 or higher then you are open to having your WordPress hacked. I strongly suggest that anyone who still has not upgraded to do so.