On Thu, 2006-03-30 at 15:10 -0500, Ki Song wrote: > My Fedora Core 4 Linux Box (primarily used for a mail server: postfix) is > crashing 3-4 times a day! > > I looked at the messages log and I see the following unexplainable record in > the log file: > > crond(pam_unix)[22601]: session closed for user root > > > Is someone trying to login to my server as root? ---- the evil crond ;-) seriously, no - crond is a daemon that is supposed to run. You will have to look deeper for the root of the problem. Craig