High CPU mod_fcgid: can't apply process slot

mod_fcgid: can't apply process slot for mod_fcgid_ can't apply process slot Thu Aug 22 13:05:06 2013] mod_fcgid: can't apply process slot for usrlocalcpanelcgi-sysphp5, mod_fcgid_ can''t apply process slot I experienced the following error: mod_fcgid: can't apply process slot for My Apache2 allows MaxClients=500 and the default

mod_fcgid_ can''t apply process slot for Websites and ActiveSync services hosted in Plesk are loading slowly or fail to load with a 50x error: mod_fcgid: can't apply process slot for varwwwcgi-bin