Warning: main(./wp-config.php) [function.main]: failed to open stream: No such file or directory in /usr/share/wordpress/wp-register.php on line 2

Fatal error: main() [function.require]: Failed opening required './wp-config.php' (include_path='.:/usr/share/php:/usr/share/pear') in /usr/share/wordpress/wp-register.php on line 2