After reading https://help.ubuntu.com/community/UbuntuBackports I think I even got the package version right.
** Attachment added: "gnuplot_4.2.4-4~hardy1.debdiff" http://launchpadlibrarian.net/20203962/gnuplot_4.2.4-4%7Ehardy1.debdiff -- Backport GnuPlot 4.2.3 to Hardy https://bugs.launchpad.net/bugs/271219 You received this bug notification because you are a member of Ubuntu Backports Testing Team, which is subscribed to Hardy Backports. -- ubuntu-backports mailing list ubuntu-backports@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-backports