A new update is available for Fedora Core - Fedora Core 3 Update: system-config-netboot-0.1.26-1_FC3. Here the announcement:

Fedora Update Notification
FEDORA-2005-752
2005-08-12
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Product : Fedora Core 3
Name : system-config-netboot
Version : 0.1.26
Release : 1_FC3
Summary : system-config-netboot is an network booting/install configuration
utility
Description :
system-config-netboot is a utility which allows you to configure
diskless environments and network installations.

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* Thu Aug 11 2005 Jason Vas Dias 0.1.26-1
- fix bug 165772 : read-only root filesystem reported as mounted with "rw" option
It appears that the initscripts package requires a "READONLY=yes"
option in /etc/sysconfig/init in the client root for rc.sysinit not to attempt
to mount it read-write.
- fix bug 165735 : diskless clients cannot cope with no DNS PTR record for their
IP address
It was possible for multiple clients who were unable to determine their
host name to mount the same snapshot directory - this is now impossible;
If clients are unable to determine their host name and have empty
SNAPSHOT settings, the IP address is used for the snapshot directory.
It is also now possible to set the hostname and domainname without DNS
by the DHCP server supplying the host-name option.
- fix bug 165730: prevent kernel*-2.6.9-12.2.EL getting an Oops when 'host' is run


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This update can be downloaded from:
http://download.fedora.redhat.com/pub/fedora/linux/core/updates/3/

331c30ed93711f0337f717a17549bcfd SRPMS/system-config-netboot-0.1.26-1_FC3.src.rpm
64c614034e8d775fae4b88508b2cbefa
x86_64/system-config-netboot-0.1.26-1_FC3.noarch.rpm
64c614034e8d775fae4b88508b2cbefa i386/system-config-netboot-0.1.26-1_FC3.noarch.rpm

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