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

Fri Apr 29 04:38:20 UTC 2011
Michel Donais <donais at telupton.com>

 **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

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Michel Donais
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