I installed and within minutes my login page was changed. This is a big leap in security, preventing hackers from even having the chance to try to login. GREAT plugin!!! EXCEPTION: As of this release, it does NOT work where WordPress is in a subdirectory and redirected from root directory - a common installation. However, it works well when WordPress is installed in the root. I do hope the other issue is resolved soon.
However, this plugin is so good that I had one site installed in a subdirectory and I rebuilt it to the root just so I could use this plugin. Yes, it's that good. I have other plugins for locking IP addresses and the like, but this one virtually eliminates the need. I have not had even one hack attempt since installing.