Hello, I have setup a multiserver setup with Ubuntu 12.04 and the perfect server guide. (Apache and MySQL 5.5) After the setup it works great but sometimes my websites with a database give my a error. Webserver and Database server are different servers. Database Error: Unable to connect to the database:Could not connect to MySQL. Websites without a database running fine. When i get the error message, i can ping form the webserver to the DB server and from the DB server to webserver. I think it is a problem with MySQL. I have also start al over again with a clean installation but i get the same problem. With older versions (Ubuntu 10.04 perfect server setup) it runs without a problem. I hope that someone can help my.