HI ST, CentOS has "upstream" system vendor: RedHat, CentOS is binary rebuild of RedHat Enterprise (with artwork replaced) - if I may say so (I'm just a humble admin of one of CentOS public mirrors, and a sysadmin who uses CenOS on multitude of machines I support). As you may know, RedHat Enterprise 4 production phase of life cycle has ended. RHEL 4 was released in 2005, so its 7 year long production phase has ended in February 2012. That was the reason why CentOS 4 has been obsoleted. You can have find more details here: https://access.redhat.com/support/policy/updates/errata/ Somebody may add more details/links. The only advise here could be: migrate your system from CentOS 4 to either CentOS 5, or better to CentOS 6. Good luck! Valeri On Thu, May 31, 2012 10:57 am, NOC - Hostemo Technology Inc wrote: > Hi Guy, > > > > Do you think still able to get centos 4.x version? I unable to get it in > mirror list. > > > > Regards > ST > > _______________________________________________ > CentOS-mirror mailing list > CentOS-mirror at centos.org > http://lists.centos.org/mailman/listinfo/centos-mirror > ++++++++++++++++++++++++++++++++++++++++ Valeri Galtsev Sr System Administrator Department of Astronomy and Astrophysics Kavli Institute for Cosmological Physics University of Chicago Phone: 773-702-4247 ++++++++++++++++++++++++++++++++++++++++