These are the final released 3.6 - i386 isos bbcf44674a1dbba686323f1455c4f17c CentOS-3.6-i386-Server.iso 0ea93144b5c97615dbf23d5b816e7880 CentOS-3.6-i386-disc1.iso f5d0dc90db2d1fc78d6849f6b77f5279 CentOS-3.6-i386-disc2.iso e6c193d7666f74fc80ea5553fe3d644c CentOS-3.6-i386-disc3.iso 5c6d3af73a9de5c34db3bc7946126016 CentOS-3.6-i386-src1.iso a1b4e7c97a9193fbdb33b30d14bbce35 CentOS-3.6-i386-src2.iso 11325de015e6d847c6e39eb935ad04aa CentOS-3.6-i386-src3.iso If you downloaded the pre-release isos then they will have the following md5sums :- 16dce0eb7592127db01e28c9f80dedf1 CentOS-3.6-i386-disc1.iso 0b556616704e3cc1663dc6182d51bc50 CentOS-3.6-i386-disc2.iso fd7a5cd0a276e527266eba13f8d941ed CentOS-3.6-i386-disc3.iso bbaec82bf41365999364245f39bbdb61 CentOS-3.6-i386-src1.iso b06be8816d633935529192dbb28cf195 CentOS-3.6-i386-src2.iso 5cf3e1eed3d03ab5a8eb2733c240a922 CentOS-3.6-i386-src3.iso The only problem with these is that there were 3 unsigned packages in the tree so they were respun.