A new update is available for Fedora Core - Fedora Core 4 Update: shadow-utils-4.0.12-4.FC4. Here the announcement:

Fedora Update Notification
FEDORA-2005-907
2005-09-22
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Product : Fedora Core 4
Name : shadow-utils
Version : 4.0.12
Release : 4.FC4
Summary : Utilities for managing accounts and shadow password files.
Description :
The shadow-utils package includes the necessary programs for
converting UNIX password files to the shadow password format, plus
programs for managing user and group accounts. The pwconv command
converts passwords to the shadow password format. The pwunconv command
unconverts shadow passwords and generates an npasswd file (a standard
UNIX password file). The pwck command checks the integrity of password
and shadow files. The lastlog command prints out the last login times
for all users. The useradd, userdel, and usermod commands are used for
managing user accounts. The groupadd, groupdel, and groupmod commands
are used for managing group accounts.

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* Wed Sep 21 2005 Peter Vrabec <pvrabec@redhat.com> 2:4.0.12-4.FC4
- rebuilt

* Tue Sep 20 2005 Peter Vrabec <pvrabec@redhat.com> 2:4.0.12-3.FC4
- adjust audit patch
- don't use new selinux api, because old api is used in FC4
- remove lastlog cs man page

* Tue Aug 30 2005 Peter Vrabec <pvrabec@redhat.com> 2:4.0.12-2
- audit support

* Sat Aug 27 2005 Peter Vrabec <pvrabec@redhat.com> 2:4.0.12-1
- upgrade

* Sat Aug 13 2005 Dan Walsh <dwalsh@redhat.com> 2:4.0.11.1-5
- Change to use new selinux api for selinux_check_passwd_access

* Tue Aug 9 2005 Peter Vrabec <pvrabec@redhat.com> 2:4.0.11.1-4
- change the password last changed field in the shadow file
when "usermod -p" is used (#164943)


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

f4f5a12710a28186b2057b96e29f5954 SRPMS/shadow-utils-4.0.12-4.FC4.src.rpm
031bc3b4d8f44a297e4307073c28fd1a ppc/shadow-utils-4.0.12-4.FC4.ppc.rpm
170ea0e622b7865ec3d4185192d9415f ppc/debug/shadow-utils-debuginfo-4.0.12-4.FC4.ppc.rpm
4c99f47eba1318a14d0fafa651b67158 x86_64/shadow-utils-4.0.12-4.FC4.x86_64.rpm
96300e910ac4143dca91f33846c76de5 x86_64/debug/shadow-utils-debuginfo-4.0.12-4.FC4.x86_64.rpm
62934d5aea0b7f37f0a0ee59d9c7b244 i386/shadow-utils-4.0.12-4.FC4.i386.rpm
da7a6f12b5b3e259fab1cbb262eab654 i386/debug/shadow-utils-debuginfo-4.0.12-4.FC4.i386.rpm

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