A new update is available for Fedora Core - Fedora Core 4 Update: yum-2.4.0-0.fc4. Here the announcement:

Fedora Update Notification
FEDORA-2005-765
2005-09-16
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Product : Fedora Core 4
Name : yum
Version : 2.4.0
Release : 0.fc4
Summary : RPM installer/updater
Description :
Yum is a utility that can check for and automatically download and
install updated RPM packages. Dependencies are obtained and downloaded
automatically prompting the user as necessary.

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Update Information:

This updates yum to the current version which adds a number
of bugfixes and features including:
* New plugin system
* More consistent option parsing
* A minor depsolving bugfix
* Improved handling of mirrors which are down
* Various documentation fixes
* Support for multiple GPG keys per repo
* Improved http caching support
* Various string cleanups
* Improved argument quoting handling
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* Tue Aug 16 2005 Jeremy Katz <katzj@redhat.com> - 2.4.0-0.fc4
- update to 2.4.0

* Tue Aug 2 2005 Jeremy Katz <katzj@redhat.com> - 2.3.4-0.fc4
- update to 2.3.4


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This update can be downloaded from:
http://download.fedora.redhat.com/pub/fedora/linux/core/updates/4/

9d49adb8e927c92430e427131b48be63 SRPMS/yum-2.4.0-0.fc4.src.rpm
6229e9812d43c408a77549365183fc15 x86_64/yum-2.4.0-0.fc4.noarch.rpm
6229e9812d43c408a77549365183fc15 i386/yum-2.4.0-0.fc4.noarch.rpm

This update can also be installed with the Update Agent; you can
launch the Update Agent with the 'up2date' command.