A new update is available for Fedora Core - [SECURITY] Fedora Core 3 Update: sylpheed-1.0.6-0.fc3. Here the announcement:

Fedora Update Notification
FEDORA-2005-1063
2005-11-09
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Product : Fedora Core 3
Name : sylpheed
Version : 1.0.6
Release : 0.fc3
Summary : A GTK+ based, lightweight, and fast email client.
Description :
This program is an X based fast email client which has features
like:
o user-friendly and intuitive interface
o integrated NetNews client (partially implemented)
o ability of keyboard-only operation
o Mew/Wanderlust-like key bind
o multipart MIME
o unlimited multiple account handling
o message queueing
o assortment function
o XML-based address book

See /usr/share/doc/sylpheed*/README for more information.

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* Wed Nov 9 2005 Akira TAGOH <tagoh@redhat.com> - 1.0.6-0.fc3
- New upstream release.
- CVE-2005-3354: fixes addressbook buffer overflow. (#172721)


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

e2650f7db8fe097bab4e741e45dc323e SRPMS/sylpheed-1.0.6-0.fc3.src.rpm
8f4cd2960fef67aa18b29036811db680 x86_64/sylpheed-1.0.6-0.fc3.x86_64.rpm
42b730b3fb51ac25aaec49e76491213a x86_64/debug/sylpheed-debuginfo-1.0.6-0.fc3.x86_64.rpm
a82d20b3f251dc2d5eef8a2788bb6dfa i386/sylpheed-1.0.6-0.fc3.i386.rpm
54158d592e1af7b9315e1516ae784481 i386/debug/sylpheed-debuginfo-1.0.6-0.fc3.i386.rpm

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