/var/log/httpd/error_log: ModSecurity: Failed to access DBM file "/var/log/httpd//global": Permission denied Failed to access DBM file "/var/log/httpd//ip": Permission denied /var/log/httpd is owned by root:root and perms are 40700. /etc/httpd/conf.d/mod_security.conf has: SecDataDir /var/log/httpd/ I suggest to change it to: SecDataDir /tmp as earlier mod_security versions had.
Still occurring under Fedora 17.