Site Daemon
After enabling APC it causes the site to say the Popular error message of SocialEngine.
We are currently experiencing some technical issues. Please try again or report this to your site administrator
To revert back edit this file application/settings/general.php
Replace the word production with development
Check your APC installation again or follow this tutorial
http://socialengine101.com/tutorials/1/1/apc-installation-done-right