[CentOS] yum update fails

Hi
  I have a system that I'm trying to run `yum update` on. It fails with the
following error:
Running rpm_check_debug
Running Transaction Test
Finished Transaction Test


Transaction Check Error:
  file /usr/share/man/man1/xdelta.1.gz from install of xdelta-1.1.4-1.el5.rf
conflicts with file from package xdelta-1.1.3-20
  file /usr/share/emacs/site-lisp/psvn.el from install of
subversion-1.5.5-0.1.el5.rf conflicts with file from package
subversion-1.4.2-2.el5
  file /usr/share/man/man1/svn.1.gz from install of
subversion-1.5.5-0.1.el5.rf conflicts with file from package
subversion-1.4.2-2.el5
  file /usr/share/man/man1/svnadmin.1.gz from install of
subversion-1.5.5-0.1.el5.rf conflicts with file from package
subversion-1.4.2-2.el5
  file /usr/share/man/man1/svnlook.1.gz from install of
subversion-1.5.5-0.1.el5.rf conflicts with file from package
subversion-1.4.2-2.el5
  file /usr/share/man/man5/svnserve.conf.5.gz from install of
subversion-1.5.5-0.1.el5.rf conflicts with file from package
subversion-1.4.2-2.el5
  file /usr/share/man/man8/svnserve.8.gz from install of
subversion-1.5.5-0.1.el5.rf conflicts with file from package
subversion-1.4.2-2.el5
  file /usr/share/xemacs/site-packages/lisp/psvn.el from install of
subversion-1.5.5-0.1.el5.rf conflicts with file from package
subversion-1.4.2-2.el5

Error Summary
-------------


  How do I resolve this problem?



--
TIA
Paolo
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