Error: cannot import name RpmUtilsError after last RHEL 5.x upgrade

Hello,

This is the problem - After lastest upgrade from RHEL 5.2 to RHEL 5.3 i'm
not able to use Yum anymore, this is what I got:

[[email protected]:~]*yum check-update*
There was a problem importing one of the Python modules
required to run yum. The error leading to this problem was:

*   cannot import name RpmUtilsError*

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, Sep 17 2008, 16:04:01)
[GCC 4.1.2 20071124 (Red Hat 4.1.2-41)]

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


Tried loading the module manually from python, and seems to be the same:

[[email protected]:~]python
Python 2.4.3 (#1, Sep 17 2008, 16:04:01)
[GCC 4.1.2 20071124 (Red Hat 4.1.2-41)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import RpmUtilsError
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
ImportError: No module named RpmUtilsError
>>>
[[email protected]:~]

Any suggestions? ideas or something to get a fix for this?

Esteban.-

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