CentOS: suPHP
[Fri Feb 27 19:33:30 2009] [error] [client 192.168.0.2] No user or group set - set suPHP_UserGroup [Fri Feb 27 19:33:30 2009] [error] [client 192.168.0.2] File does not exist: /var/www/error/500.html
[Fri Feb 27 19:33:30 2009] [error] [client 192.168.0.2] No user or group set - set suPHP_UserGroup [Fri Feb 27 19:33:30 2009] [error] [client 192.168.0.2] File does not exist: /var/www/error/500.html