This process monitor watches for the ACPI daemon process to be running.
A failure indicates that the acpid service is down.
Check the service on the system by running 'ps -ef | grep acpid' or by viewing the diagnostic in the Operations Manager console. Start it by running the command 'service acpid start' or by clicking the recovery link in the Operations Manager console.
For root cause analysis, first check the system log files (/var/log/messages) and (/var/log/acpid), and view any related entries at the time of failure.