yum出了问题，请大神帮帮忙！急！！

以下是具体报错信息，请大神指点...本人初学者...
[root@chen ~]# yum clean all
There was a problem importing one of the Python modules
required to run yum. The error leading to this problem was:

No module named sqlitecachec

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:
2.6.5 (r265:79063, Jul 14 2010, 11:36:23)
[GCC 4.4.4 20100630 (Red Hat 4.4.4-10)]

If you cannot solve this problem yourself, please go to
the yum faq at:
http://yum.baseurl.org/wiki/Faq

请会的大神帮帮忙，小的在此拜谢了~