A new update is available for Fedora Core - Fedora Core 4 Update: yum-2.4.1-1.fc4. Here the announcement:

Fedora Update Notification
FEDORA-2005-1111
2005-12-12
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Product : Fedora Core 4
Name : yum
Version : 2.4.1
Release : 1.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 update fixes multiple minor bugs in yum as well as
adding some additional caching to help speed up repeated
runs of the yum command.
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* Mon Dec 5 2005 Jeremy Katz <katzj@redhat.com> - 2.4.1-1.fc4
- add Panu's patch for clean all getting the cache cookie (#174715)
- change default cache timeout to 30 minutes (new upstream default)

* Wed Nov 30 2005 Jeremy Katz <katzj@redhat.com> - 2.4.1-0.fc4
- update to 2.4.1


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

17092cac756413975e321474f195dafc SRPMS/yum-2.4.1-1.fc4.src.rpm
635533fe0f6ddfc15b4bc38eb0a929f3 x86_64/yum-2.4.1-1.fc4.noarch.rpm
635533fe0f6ddfc15b4bc38eb0a929f3 i386/yum-2.4.1-1.fc4.noarch.rpm

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