If you are receiving following error while restarting apache on Linux server:
service httpd status, results in httpd dead but subsys locked
That error usally means that have a broken LoadModule in the httpd.conf.
Following are the possible fixes for this error:
tried deleting the /var/lock/subsys/httpd file .
Also try commenting out this line in your httpd.conf
LoadModule unique_id_module modules/mod_unique_id.so
Also check if it is running as default
chkconfig --list | grep httpd