I've created an update script for dungog.net's Update System contrib.
It was taken from the version 3 unofficial update script (only the rpm's, not any downloaded and installed from a script)
It would be nice if contribs could host something like this (just as dungog.net host for their own contribs) so that we could link to it and it would be updated with the latest rpm's, as long as it's kept up-to-date. You could then run the update script when you wanted and have a straight link the the correct rpm file.
Just cut and paste the text into a text file and save onto your website. Enter the relevant URL as a new url for updates in the Update System server-manager panel.
Warning this seems to just check version numbers specifically, it doesn't differentiate between older /newer version numbers. i.e I have a newer version of perl-Net-Ping but it see that my version of perl-Net-Ping is different from the version in the update script (left that one in as I installed a newer version of perl-Net-Ping so that I could enable Sender Policy Framework in ASSP)
It doesn't seem to be a great problem as long as you know what you've got installed.
I may be wrong about this and would be happily corrected.
If you're feeling lazy and can't be bothered cutting & pasting you can grab it from my site (but please don't use me as a link as I've only got a poor 512k connection.)
http://www.hspencer.co.uk/sme-server/check-updates/update.txt
# http://<url of script>
# alternate lists follow this format
# download url directory or file, rpm name , rpm name with version no. , documentation url
# separate with a single space
#
# Version 3 Updates
# lazy admin tools and userpanel
http://sme.swerts-knudsen.com/downloads/e-smith-lazy_admin_tools-0.9.0-1.noarch.rpm e-smith-lazy_admin_tools e-smith-lazy_admin_tools-0.9.0-1
http://sme.swerts-knudsen.com/downloads/Userpanel/e-smith-userpanel-1.6.0-3.noarch.rpm e-smith-userpanel e-smith-userpanel-1.6.0-3
http://sme.swerts-knudsen.com/downloads/Userpanel/perl-Unicode-IMAPUtf7-1.02-1.i386.rpm perl-Unicode-IMAPUtf perl-Unicode-IMAPUtf7-1.02-1
http://sme.swerts-knudsen.com/downloads/Userpanel/perl-Unicode-String-2.06-1.i386.rpm perl-Unicode-String perl-Unicode-String-2.06-1
# openssh
http://sme.swerts-knudsen.com/downloads/Updates/6.0.1/OpenSSH/openssh-3.9p1-1es1.i386.rpm openssh openssh-3.9p1-1es1
http://sme.swerts-knudsen.com/downloads/Updates/6.0.1/OpenSSH/openssh-clients-3.9p1-1es1.i386.rpm openssh-clients openssh-clients-3.9p1-1es1
http://sme.swerts-knudsen.com/downloads/Updates/6.0.1/OpenSSH/openssh-server-3.9p1-1es1.i386.rpm openssh-server openssh-server-3.9p1-1es1
# openssl
http://sme.swerts-knudsen.com/downloads/Updates/6.0.1/OpenSSL/openssl-0.9.6m-1es1.i386.rpm openssl openssl-0.9.6m-1es1
http://sme.swerts-knudsen.com/downloads/Updates/6.0.1/OpenSSL/openssl-devel-0.9.6m-1es1.i386.rpm openssl-devel openssl-devel-0.9.6m-1es1
http://sme.swerts-knudsen.com/downloads/Updates/6.0.1/OpenSSL/openssl-perl-0.9.6m-1es1.i386.rpm openssl-perl openssl-perl-0.9.6m-1es1
# Horde Framework
http://sme.swerts-knudsen.com/downloads/Updates/6.0.1/WebMail/e-smith-imp-1.10.0-04dm.noarch.rpm e-smith-imp e-smith-imp-1.10.0-04dm
http://sme.swerts-knudsen.com/downloads/Updates/6.0.1/WebMail/e-smith-kronolith-0.8.1-02.noarch.rpm e-smith-kronolith e-smith-kronolith-0.8.1-02
http://sme.swerts-knudsen.com/downloads/Updates/6.0.1/WebMail/e-smith-mnemo-0.8.0-04.noarch.rpm e-smith-mnemo e-smith-mnemo-0.8.0-04
http://sme.swerts-knudsen.com/downloads/Updates/6.0.1/WebMail/e-smith-nag-0.8.0-05.noarch.rpm e-smith-nag e-smith-nag-0.8.0-05
http://sme.swerts-knudsen.com/downloads/Updates/6.0.1/WebMail/horde-2.2.5-1dm.noarch.rpm horde horde-2.2.5-1dm
http://sme.swerts-knudsen.com/downloads/Updates/6.0.1/WebMail/imp-3.2.5-01dm.noarch.rpm imp imp-3.2.5-01dm
http://sme.swerts-knudsen.com/downloads/Updates/6.0.1/WebMail/kronolith-1.1.2-1es.noarch.rpm kronolith kronolith-1.1.2-1es
http://sme.swerts-knudsen.com/downloads/Updates/6.0.1/WebMail/mnemo-1.1.2-1es.noarch.rpm mnemo mnemo-1.1.2-1es
http://sme.swerts-knudsen.com/downloads/Updates/6.0.1/WebMail/nag-1.1.1-1es.noarch.rpm nag nag-1.1.1-1es
http://sme.swerts-knudsen.com/downloads/Updates/6.0.1/WebMail/turba-1.2.2-1es00.noarch.rpm turba turba-1.2.2-1es00
# phpmyadmin
http://mirror.contribs.org/smeserver/contribs/nightspirit/e-smith-phpmyadmin/e-smith-phpmyadmin-2.6.0-11.noarch.rpm e-smith-phpmyadmin e-smith-phpmyadmin-2.6.0-11
# apache and dependancies
http://mirror.datapipe.net/norlug/redhat-7.3/RPMS/db4-4.0.14-4.norlug.i386.rpm db4 db4-4.0.14-4.norlug
http://mirror.datapipe.net/norlug/redhat-7.3/RPMS/python2.3-2.3.4-2.norlug.i386.rpm python2 python2.3-2.3.4-2
http://mirror.datapipe.net/norlug/redhat-7.3/RPMS/mod_ssl-2.8.22-1.norlug.i386.rpm mod_ssl mod_ssl-2.8.22-1.norlug
http://mirror.datapipe.net/norlug/redhat-7.3/RPMS/apache-1.3.33-2.norlug.i386.rpm apache-1 apache-1.3.33-2.norlug
http://mirror.datapipe.net/norlug/redhat-7.3/RPMS/apache-devel-1.3.33-2.norlug.i386.rpm apache-devel-1 apache-devel-1.3.33-2.norlug
http://mirror.datapipe.net/norlug/redhat-7.3/RPMS/apache-manual-1.3.33-2.norlug.i386.rpm apache-manual-1 apache-manual-1.3.33-2.norlug
http://download.fedoralegacy.org/redhat/7.3/os/i386/compat-glibc-6.2-2.1.3.2.i386.rpm compat-glibc-6 compat-glibc-6.2-2.1.3.2
#misc updates
http://sme.swerts-knudsen.dk/downloads/Updates/6.0.1/zlib-1.2.1.1-4.i386.rpm zlib-1 zlib-1.2.1.1-4
http://www.dungog.net/sme/files/601updates/zlib-devel-1.2.1.1-4.i386.rpm zlib-devel-1 zlib-devel-1.2.1.1-4
http://sme.swerts-knudsen.dk/downloads/Updates/6.0.1/proftpd-1.2.10-es1.i386.rpm proftpd-1 proftpd-1.2.10-es1
http://sme.swerts-knudsen.dk/downloads/Updates/6.0.1/fetchmail-6.2.5-1.i386.rpm fetchmail-6 fetchmail-6.2.5-1
http://sme.swerts-knudsen.dk/downloads/Updates/6.0.1/Rsync/rsync-2.6.2-1.noarch.rpm rsync-2 rsync-2.6.2-1
http://sme.swerts-knudsen.dk/downloads/Updates/6.0.1/GnuPG/gnupg-1.2.4-0_19.rh7.3.at.i386.rpm gnupg-1 gnupg-1.2.4-0_19.rh7.3.at
http://www.ibiblio.org/pub/linux/distributions/smeserver/updates/6.0.1/RPMS/initscripts-6.67-1es26.i386.rpm initscripts-6 initscripts-6.67-1es26
# securemail
http://www.pagefault.org/code/e-smith/securemail/6.0/e-smith-securemail-6.0.1-01dc.noarch.rpm e-smith-securemail e-smith-securemail-6.0.1-01dc
http://www.pagefault.org/code/e-smith/securemail/6.0/e-smith-smtp-authentication-6.0.1-02dc.noarch.rpm e-smith-smtp-authentication e-smith-smtp-authentication-6.0.1-02dc
http://www.pagefault.org/code/e-smith/securemail/6.0/e-smith-ssl-imap-6.0.1-02dc.noarch.rpm e-smith-ssl-imap e-smith-ssl-imap-6.0.1-02dc
http://www.pagefault.org/code/e-smith/securemail/6.0/e-smith-ssl-mailfront-6.0.1-02dc.noarch.rpm e-smith-ssl-mailfront e-smith-ssl-mailfront-6.0.1-02dc
http://www.pagefault.org/code/e-smith/securemail/6.0/e-smith-ssl-popd-6.0.1-02dc.noarch.rpm e-smith-ssl-popd e-smith-ssl-popd-6.0.1-02dc
# modindex
http://mirror.contribs.org/smeserver/contribs/gzartman/Contribs/mod_perl/e-smith-mod_perl-0.0.1-2.noarch.rpm e-smith-mod_perl e-smith-mod_perl-0.0.1-2
http://mirror.contribs.org/smeserver/contribs/gzartman/Beta/ModIndex/e-smith-modindex-0.0.5-2.noarch.rpm e-smith-modindex e-smith-modindex-0.0.5-2
# fetchmail
http://www.schirrms.net/files/perl-CGI-FormMagick-0.89-08.noarch.rpm perl-CGI-FormMagick perl-CGI-FormMagick-0.89-08
http://www.schirrms.net/files/smeserver-fetchmail-1.3.4-02.noarch.rpm smeserver-fetchmail smeserver-fetchmail-1.3.4-02
# windows update cache manager
http://mirror.contribs.org/smeserver/contribs/erantrua/e-smith/5.6/stable/windows-update/perl-Net-Telnet-3.03-1.i386.rpm perl-Net-Telnet perl-Net-Telnet-3.03-1
http://mirror.contribs.org/smeserver/contribs/erantrua/e-smith/5.6/stable/windows-update/perl-TimeDate-1.16-1.i386.rpm perl-TimeDate perl-TimeDate-1.16-1
http://mirror.contribs.org/smeserver/contribs/erantrua/e-smith/5.6/stable/windows-update/sme-cache-windows-1.0-3.noarch.rpm sme-cache-windows sme-cache-windows-1.0-3
#dns synchroniser
http://www.activeservice.co.uk/sme/contribs/sme-dhcp-dns-0.9-rc1.noarch.rpm sme-dhcp-dns sme-dhcp-dns-0.9-rc1
#dhcp manager
http://www.developit.fr/FichePratique/SMEServer/perl-Net-Ping-2.24-1.i386.rpm perl-Net-Ping perl-Net-Ping-2.24-1.i386
http://www.developit.fr/FichePratique/SMEServer/wol-0.6.0-3.i386.rpm wol wol-0.6.0-3
http://www.developit.fr/FichePratique/SMEServer/e-smith-dhcpmanager-1.4-7.noarch.rpm e-smith-dhcpmanager e-smith-dhcpmanager-1.4-7
# print spooler manager
http://mirror.contribs.org/smeserver/contribs/saco/smeserver/beta/lprng-monitor/smeserver-lprng-monitor-0.0.6-1.noarch.rpm smeserver-lprng-monitor smeserver-lprng-monitor-0.0.6-1
# mail log analyser
http://mirror.contribs.org/smeserver/contribs/saco/contrib/saco-mitel-isoqlog/saco-mitel-isoqlog-0.1-05.noarch.rpm saco-mitel-isoqlog saco-mitel-isoqlog-0.1-05
# rootkit hunter
http://mirror.contribs.org/smeserver/contribs/dthomas/smeserver/6.x/Contrib/rkhunter/smeserver-rkhunter-1.1.8-1.noarch.rpm smeserver-rkhunter smeserver-rkhunter-1.1.8-1
# raidmonitor
http://mirror.contribs.org/smeserver/contribs/dmay/mitel/contrib/raidmonitor/dmc-mitel-raidmonitor-0.0.1-5.noarch.rpm dmc-mitel-raidmonitor dmc-mitel-raidmonitor-0.0.1-5