Jean Lee wrote: > Does it mean that if I installed CentOS 4.0, I have to do a yum upgrade > on the 4.0 tree in order to have the last version of all installed > packages then a yum upgrade on the 4.1 tree ? > Or is it possible to do a yum upgrade directly on the 4.1 tree and it > will upgrade all the installed packages ? If you install 4.0 and regularly 'yum update' your systems, it will automatically move from 4.0 to 4.1 to 4.2 to 4.3 to 4.x, as they are released. There is no manual intervention required from your side for this purpose. - KB -- Karanbir Singh : http://www.karan.org/ GnuPG Public Key : http://www.karan.org/publickey.asc