[CentOS] Can somebody explay the here down message lines from server Centos 5.6

**Unmatched Entries** gdm[5342]: pam_succeed_if(gdm:auth): error retrieving information about user gdm[5342]: pam_succeed_if(gdm:auth): error retrieving information about user gdm[5342]: pam_succeed_if(gdm:auth): error retrieving information about user 9 gdm[5342]: pam_succeed_if(gdm:auth): error retrieving information about user gdm[5342]: pam_succeed_if(gdm:auth): error retrieving information about user gdm[5342]: pam_succeed_if(gdm:auth): error retrieving information about user gdm[5342]: pam_succeed_if(gdm:auth): error retrieving information about user gdm[5342]: pam_succeed_if(gdm:auth): error retrieving information about user gdm[5342]: pam_succeed_if(gdm:auth): error retrieving information about user gdm[5342]: pam_succeed_if(gdm:auth): error retrieving information about user

--- Michel Donais