crond stops after logging off

[Chu, Conway]

I login as a regular user and then su to root. Use "service crond start" to
start the crond deamon then logoff. But login again and use "service crond
status", it displays that the pid exists but the process is no longer
available. Looks like crond terminates after logging off.  Question is,
besides starting crond at boot time, how to start crond and let it run and
able to logoff"?
 

Thanks,
 
Conway Chu
Sr. DBA, Sys Ops
Comcast National IP 
1800 Bishops Gate Blvd
Mt. Laurel, NJ 08054
Phone: 856-317-7312
Cell: 609-685-4324
Email: conway_chu at cable.comcast.com