Description of problem:

With every cron job systemd-logind writes quite useless information in /var/log/messages.  The net effect is that on a machine which runs often some small cron jobs logs are flooded by stuff like that:

Dec 22 19:04:01 ... systemd-logind[1037]: New session 943 of user root. 
Dec 22 19:04:01 ... systemd-logind[1037]: Removed session 943.
Dec 22 19:06:01 ... systemd-logind[1037]: New session 944 of user root. 
Dec 22 19:06:01 ... systemd-logind[1037]: Removed session 944.

This not only makes logs hard to read but is really a security issue if one would try to identify a needle of an unexpected root session in this haystack. Is there any way to stop this garbage? 'man systemd-logind.conf' does not seem to suggest any methods to restrain this deluge (save killing logging, of course, but this is not an accptable solution).

Version-Release number of selected component (if applicable):
systemd-37-3.fc16

How reproducible:
always