Service command

Before backing up my MySQL database, I stop the service with the 
'service mysql-server' stop command

---

Stopping mysql.
cronjobs: No such file or directory.
Waiting for PIDS: 38188.
server stopped

---

This works fine, but every time it is displaying a line, saying ' 
cronjobs: No such file or directory'
I do have a directory cronjobs from which the command is given (under 
sh). Also directly as a command under (csh) I get the same display.

Can you tell what is the cause of this?

Best regards,
Jos