auth.log sorusu

[ozgur uncuoglu <ouncuoglu@ispro.net.tr>]

aşağıdaki auth.log makina başında olmadığım ve dışardan da girmediğim 
bir saatte yazılmış
ne anlama geliyor bu şimdi?

Sep 12 21:39:01 mezzanine CRON[10190]: (pam_unix) session closed for 
user root
Sep 12 22:09:01 mezzanine CRON[10201]: (pam_unix) session opened for 
user root by (uid=0)
Sep 12 22:09:02 mezzanine CRON[10201]: (pam_unix) session closed for 
user root
Sep 12 22:17:01 mezzanine CRON[10212]: (pam_unix) session opened for 
user root by (uid=0)
Sep 12 22:17:01 mezzanine CRON[10212]: (pam_unix) session closed for 
user root
Sep 12 22:39:01 mezzanine CRON[10214]: (pam_unix) session opened for 
user root by (uid=0)
Sep 12 22:39:01 mezzanine CRON[10214]: (pam_unix) session closed for 
user root
Sep 12 23:09:01 mezzanine CRON[10225]: (pam_unix) session opened for 
user root by (uid=0)