I'm using the Bitnami MediaWiki AMI, and eventually the site will fail. When I look at the error_log in the apache2/logs folder, I see the following: PHP Fatal error: require(): unable to unlock pthread lock in /opt/bitnami/apps/mediawiki/htdocs/includes/AutoLoader.php on line 1145.
I restart the server (or reboot the box) and it works again, but eventually I'll get the same error.
Any ideas?