newby:cannot get updates

From: george (george_at_localhost.localdomain)
Date: 11/28/04 

Date: Sat, 27 Nov 2004 23:20:52 -0800

howdy, Im trying to get updates with packages i installed on fedora core3
cd...but i think i messed something up.

from a console

#>up2date
Traceback (most recent call last):
  File "/usr/sbin/up2date", line 33, in ?
    from up2date_client import up2date
  File "/usr/share/rhn/up2date_client/up2date.py", line 29, in ?
    import depSolver
  File "/usr/share/rhn/up2date_client/depSolver.py", line 4, in ?
    import packageList
  File "/usr/share/rhn/up2date_client/packageList.py", line 17, in ?
    import up2dateComps
  File "/usr/share/rhn/up2date_client/up2dateComps.py", line 7, in ?
    from rhpl import comps
  File "/usr/lib64/python2.3/site-packages/rhpl/comps.py", line 5, in ?
    import libxml2
  File "/usr/lib64/python2.3/site-packages/libxml2.py", line 1, in ?
    import libxml2mod
ImportError: /usr/lib64/python2.3/site-packages/libxml2mod.so: undefined
symbol: xmlNewDocPI

My /etc/sysconfig/rhn/sources looks like this...

fedora-core-3
http://download.fedora.redhat.com/pub/fedora/linux/core/3/$ARCH/os/ yum
updates-released-fc3
http://download.fedora.redhat.com/pub/fedora/linux/core/updates/3/$ARCH/

yum-mirror fedora-core-3
http://fedora.redhat.com/download/up2date-mirrors/fedora-core-3 yum-mirror
updates-released-fc3
http://fedora.redhat.com/download/up2date-mirrors/updates-released-fc3

This would have been the only place i made changes to, then changed my
mind. I believe i placed everything back to where it was at the
first.Except maybe the first line has something missing.

Can someone help me please Thank you