Currently I am using WP 2.6. I downloaded wp-door, installed it, and activated it. Once I logged out and tried to log back in I discovered my site was not accessible through IE 8 Beta 2 or Safari. By inaccessible I mean my index, home page, was not visable and a message stating site does not exist was received. It was not until I deleted the plugin through my FTP uploader due to the fact I could not log in that I was able to resolve the problem.
It is my hope that more stringent quality standards are put in place before a plugin is available for download by users of WordPress.