Thread:Project:Support desk/Can't contact the database server: Access denied for user 'wikiuser'@'localhost' (using password: NO) (localhost))/reply (7)

Please make sure you are editing the correct LocalSettings.php file! Maybe you also have some symlinks in place, which break the setup: Usually MediaWiki has to be installed somewhere in the webroot folder, which usually is /var/.../www/. You however, seem to use it from /usr/share/, which means that you somehow have to make these files accessable to the outside world. I think the way you do this is part of the problem.