On Thursday 20 October 2005 00:08, Jun Zhang wrote: > 2.2.3 (#1, Aug? 8 2003, 08:44:02) > [GCC 3.2.3 20030502 (Red Hat Linux 3.2.3-13)] Did you read the FAQ to try to solve the problem yourself? It looks like you have a RHEL 3 or CentOS 3 system. Do you also have another version of Python? What version of yum? Please send the output of this: $ ll /usr/lib/python?.?/site-packages/yum/__init__.py thanks, -- -jeff