yum and up2date broken

[Arnaldo Bento]

Hello
I read the archive and tried some of the solutions but I continue with
the problem with yum and up2date.
See what I did:

[root at aabento root]# yum info rsync

Traceback (most recent call last):
  File "/usr/bin/yum", line 22, in ?
    import yummain
  File "/usr/share/yum/yummain.py", line 22, in ?
    import clientStuff
  File "/usr/share/yum/clientStuff.py", line 18, in ?
    import rpm
ImportError: /usr/lib/python2.3/site-packages/rpmmodule.so: undefined
symbol: rp               mdsBT

[root at aabento root]# yum update

Traceback (most recent call last):
  File "/usr/bin/yum", line 22, in ?
    import yummain
  File "/usr/share/yum/yummain.py", line 22, in ?
    import clientStuff
  File "/usr/share/yum/clientStuff.py", line 18, in ?
    import rpm
ImportError: /usr/lib/python2.3/site-packages/rpmmodule.so: undefined
symbol: rpmdsBT
You have new mail in /var/spool/mail/root

[root at aabento root]# rpm -qa | grep rpm

redhat-rpm-config-8.0.28-1.1.1
rpm-build-4.3.1-0.1
rpm-4.3-0.22
rpm-python-4.3.1-0.1
redhat-java-rpm-scripts-1.0.3-2
rpm-devel-4.3.1-0.1
rpmdb-fedora-1.91-0.20040325

[root at aabento root]# rpm -Uvh rpm-4.3.1-0.1.i386.rpm

Preparing...                ###########################################
[100%]
error: setexeccon(root:staff_r:rpm_script_t) fails from context
"root:staff_r:staff_t": Invalid argument
error: %pre(rpm-4.3.1-0.1) scriptlet failed, exit status 255
error:   install: %pre scriptlet failed (2), skipping rpm-4.3.1-0.1


I am not a specialist in linux but liked the FC1 and I'm trying  this
new version and to count with your help. 

Thanks in advance.

Arnaldo Bento