phpBB
Social connection through online world is becoming more and more relevant these days.
Nginx is a high performance web server and mail proxy server written by Igor Sysoev and a good replacement for Apache HTTPD, the market leader.
We now have our phpBB forum running on Nginx web server, a high quality and significantly better performing web server than Apache HTTPD.
Users, including forum admins, sometimes gets message while editing a post, sometimes for quick edits and sometimes for longer edits - "The submitted form was invalid.