CentOS - Mar 2006 - How Undo Yum Upgrade

I accidentally enabled a repo, so my automatic yum upgrade installed a 
bunch of stuff and possibly broke yum.  Is it possible to reverse this? 
  Follow is the yum log of what got installed.

Mar 04 01:34:04 Updated: libselinux.i386 1.23.10-1.99_3.el4.at
Mar 04 01:34:04 Updated: popt.i386 1.10.2-15.1_58.el4.at
Mar 04 01:34:04 Installed: libbeecrypt6.i386 4.1.2-9.2_11.el4.at
Mar 04 01:34:04 Installed: libxml2_2.i386 2.6.22-1_21.el4.at
Mar 04 01:34:04 Installed: librpm4.3.i386 4.3.3-8_41.el4.at
Mar 04 01:34:04 Updated: neon.i386 0.24.7-5.99_2.el4.at
Mar 04 01:34:05 Installed: librpm4.4.i386 4.4.2-15.1_58.el4.at
Mar 04 01:34:05 Updated: rpm.i386 4.4.2-15.1_58.el4.at
Mar 04 01:34:08 Installed: python24.i386 2.4.1-2_8.el4.at
Mar 04 01:34:08 Updated: libxml2.i386 2.6.22-1_21.el4.at
Mar 04 01:34:08 Installed: pythonabi.i386 2.3.4-1.el4.at
Mar 04 01:34:09 Updated: libxml2-python.i386 2.6.22-1_21.el4.at
Mar 04 01:34:09 Updated: rpm-python.i386 4.4.2-15.1_58.el4.at
Mar 04 01:34:09 Installed: libxml2-python24.i386 2.6.22-1_22.el4.at
Mar 04 01:34:10 Installed: rpm-python24.i386 4.4.2-11_9.el4.at
Mar 04 01:34:11 Installed: neon-devel.i386 0.24.7-5.99_2.el4.at
Mar 04 01:34:11 Updated: libselinux-devel.i386 1.23.10-1.99_3.el4.at
Mar 04 01:34:11 Installed: atrpms.noarch 67-1.at
Mar 04 01:34:12 Updated: perl-XML-LibXML.i386 1.58-4.el4.at
Mar 04 01:34:12 Installed: sqlite-devel.i386 3.2.2-1
Mar 04 01:34:13 Updated: yum.i386 2.4.2-69.el4.at
Mar 04 01:34:13 Updated: rpm-build.i386 4.4.2-15.1_58.el4.at
Mar 04 01:34:15 Updated: libxml2-devel.i386 2.6.22-1_21.el4.at
Mar 04 01:34:15 Updated: rpm-devel.i386 4.4.2-15.1_58.el4.at
Mar 04 01:34:15 Erased: rpm-libs

John Thomas wrote:
> I accidentally enabled a repo, 
In case it is not obvious, this is a hobby.  I am not a pro.  This is 
painfully embarrassing.  I should find an easier hobby.

I found, "Transactions and Rollback with RPM"
http://www.linuxjournal.com/node/7034/print

Anybody have any experience with that?  I do not have the "cache" 
setting set in rpm or yum.

I'd suggest getting your hands on the CentOS DVD/CD installation media or 
downloading the replaced rpms from a mirror somewhere and reinstalling 
them with rpm, with the proper option to install older packages 
(replacepkgs or something like that).  Then when you've undone the mess 
you can run yum upgrade (make sure it's configured correctly) - to get 
back up to the proper newest CentOS versions...

Cheers,
MaZe.

On Sat, 4 Mar 2006, John Thomas wrote:
> I accidentally enabled a repo, so my automatic yum upgrade installed a
bunch
> of stuff and possibly broke yum.  Is it possible to reverse this?  Follow
is
> the yum log of what got installed.
>
> Mar 04 01:34:04 Updated: libselinux.i386 1.23.10-1.99_3.el4.at
> Mar 04 01:34:04 Updated: popt.i386 1.10.2-15.1_58.el4.at
> Mar 04 01:34:04 Installed: libbeecrypt6.i386 4.1.2-9.2_11.el4.at
> Mar 04 01:34:04 Installed: libxml2_2.i386 2.6.22-1_21.el4.at
> Mar 04 01:34:04 Installed: librpm4.3.i386 4.3.3-8_41.el4.at
> Mar 04 01:34:04 Updated: neon.i386 0.24.7-5.99_2.el4.at
> Mar 04 01:34:05 Installed: librpm4.4.i386 4.4.2-15.1_58.el4.at
> Mar 04 01:34:05 Updated: rpm.i386 4.4.2-15.1_58.el4.at
> Mar 04 01:34:08 Installed: python24.i386 2.4.1-2_8.el4.at
> Mar 04 01:34:08 Updated: libxml2.i386 2.6.22-1_21.el4.at
> Mar 04 01:34:08 Installed: pythonabi.i386 2.3.4-1.el4.at
> Mar 04 01:34:09 Updated: libxml2-python.i386 2.6.22-1_21.el4.at
> Mar 04 01:34:09 Updated: rpm-python.i386 4.4.2-15.1_58.el4.at
> Mar 04 01:34:09 Installed: libxml2-python24.i386 2.6.22-1_22.el4.at
> Mar 04 01:34:10 Installed: rpm-python24.i386 4.4.2-11_9.el4.at
> Mar 04 01:34:11 Installed: neon-devel.i386 0.24.7-5.99_2.el4.at
> Mar 04 01:34:11 Updated: libselinux-devel.i386 1.23.10-1.99_3.el4.at
> Mar 04 01:34:11 Installed: atrpms.noarch 67-1.at
> Mar 04 01:34:12 Updated: perl-XML-LibXML.i386 1.58-4.el4.at
> Mar 04 01:34:12 Installed: sqlite-devel.i386 3.2.2-1
> Mar 04 01:34:13 Updated: yum.i386 2.4.2-69.el4.at
> Mar 04 01:34:13 Updated: rpm-build.i386 4.4.2-15.1_58.el4.at
> Mar 04 01:34:15 Updated: libxml2-devel.i386 2.6.22-1_21.el4.at
> Mar 04 01:34:15 Updated: rpm-devel.i386 4.4.2-15.1_58.el4.at
> Mar 04 01:34:15 Erased: rpm-libs
>
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