You won't believe it, but i messed up my database right completely...
I was trying to install extra things on the server (like cacti, phpmyadmin...).
And somewhere, i messed up. I can't access the webmin anymore. It just returns a blank page.
When i stop the mysqld, and restart it with " sudo mysqld --skip-grant-tables", i can access it again.
So somewhere i messed up the rights.
Any idea how i can repair this? :$