I am having this problem with Dreamhost, but I can't say that it's host specific. WPMu simply can't connect to the database for some reason.
Removing the "or die" argument lets the index page try to load, but it still cannot connect and then supplies the following:
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Warning: mysql_get_server_info() [function.mysql-get-server-info]: Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) in /home/.thuvia/wpblog/blog.conscioustribe.org/wp-includes/wp-db.php on line 84
Warning: mysql_get_server_info() [function.mysql-get-server-info]: A link to the server could not be established in /home/.thuvia/wpblog/blog.conscioustribe.org/wp-includes/wp-db.php on line 84
WordPress µ
Warning: mysql_get_server_info() [function.mysql-get-server-info]: Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) in /home/.thuvia/wpblog/blog.conscioustribe.org/wp-admin/includes/schema.php on line 7
Warning: mysql_get_server_info() [function.mysql-get-server-info]: A link to the server could not be established in /home/.thuvia/wpblog/blog.conscioustribe.org/wp-admin/includes/schema.php on line 7
Warning: mysql_affected_rows(): supplied argument is not a valid MySQL-Link resource in /home/.thuvia/wpblog/blog.conscioustribe.org/wp-includes/wp-db.php on line 293
Warning: mysql_insert_id(): supplied argument is not a valid MySQL-Link resource in /home/.thuvia/wpblog/blog.conscioustribe.org/wp-includes/wp-db.php on line 296
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So the next step is to diagnose why it's not connecting.
I'm using a different subdomain for the install and the database. Perhaps that's the issue, but it shouldn't be. Any ideas?