If you are using WHM or CSF (or both) then you may get an alert for the sd-agent process when it has been running for some time. The alert might look like this: 

Time:         Thu Jul 14 12:00:00 2011 +0000
Account:      sd-agent
Resource:     Process Time
Exceeded:     1801 > 1800 (seconds)
Executable:   /usr/bin/python
Command Line: python /usr/bin/sd-agent/agent.py start init --clean
PID:          1234
Killed:       No

This is normal because the agent runs continuously. To prevent this alert, you should whitelist the sd-agent process. You can do this by adding the following line to your /etc/csf/csf.pignore file: 

cmd:python /usr/bin/sd-agent/agent.py start init --clean

For reference, see Section 8 of the CSF readme.