There was a problem importing one of the Python modules required to run yum. The error leading to this problem was: No module named yum Please install a package which provides this module, or verify that the module is installed correctly. It's possible that the above module doesn't match the current version of Python, which is: 2.3.4 (#1, Nov 4 2004, 14:06:56) [GCC 3.4.2 20041017 (Red Hat 3.4.2-6.fc3)] If you cannot solve this problem yourself, please send this message to <yum@xxxxxxxxxxxxxxxxxxxx>. [root@server yum-2.4.0]# rpm -qa python my current python-2.3.4-14 : mY OS RHEL 4.0 ES pls. solve it. ::: Syed Ahsan Habib ::: ICT Student Mob: +880152453445 Pho: +88028316617 ::::::::::::::::::::::::