root@jesran~#yum updateThere was a problem importing one of the Python modules
required to run yum. The error leading to this problem was:

   libgcc_s.so.1: cannot open shared object file: Input/output error

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:
2.4.3 (#1, Mar 14 2007, 18:51:08) 
[GCC 4.1.1 20070105 (Red Hat 4.1.1-52)]

If you cannot solve this problem yourself, please go to 
the yum faq at:
  http://wiki.linux.duke.edu/YumFaq