Hi, I've installed CentOS-4 4 days ago. Now, every 5 minutes, crond opens and close a root session, with no other info. Example: Apr 14 16:25:01 tux crond(pam_unix)[4031]: session opened for user root by (uid=0) Apr 14 16:25:02 tux crond(pam_unix)[4031]: session closed for user root Every five minutes the same thing. I have nothing in /etc/crontab that makes such a thing. Does anyone knows why is this happening and what is crond doing ? Any help would be apreciated. /etc/crontab: -------------------- [root@tux cron.daily]# cat /etc/crontab SHELL=/bin/bash PATH=/sbin:/bin:/usr/sbin:/usr/bin MAILTO=root HOME=/ # run-parts 01 * * * * root run-parts /etc/cron.hourly 02 4 * * * root run-parts /etc/cron.daily 22 4 * * 0 root run-parts /etc/cron.weekly 42 4 1 * * root run-parts /etc/cron.monthly 00 3 * * 5 root /usr/local/bin/backup [root@tux cron.daily]# -------------------------------------------- Warm Regards, M?rio Gamito