Warning: require_once(./includes/session.inc) [function.require-once]: failed to open stream: Too many open files in /var/www/clients/client6/web18/web/includes/bootstrap.inc on line 1017

Fatal error: require_once() [function.require]: Failed opening required './includes/session.inc' (include_path='.:/usr/share/php:/usr/share/pear') in /var/www/clients/client6/web18/web/includes/bootstrap.inc on line 1017