Logue no SSH e digite:
su - sudo -i yum list updates yum update
yum clean all yum update glibc* yum* rpm* python* yum update reboot
cat /etc/redhat-release Vai aparecer desse modo CentOS release 5.10 (Final)
lsb_release -a
## Output ## LSB Version: :core-4.0-amd64:core-4.0-ia32:core-4.0-noarch:graphics-4.0-amd64:graphics-4.0-ia32:graphics-4.0-noarch:printing-4.0-amd64:printing-4.0-ia32:printing-4.0-noarch Distributor ID: CentOS Description: CentOS release 5.10 (Final) Release: 5.10 Codename: Final Pronto você atualizou o centOs