FWIW, this seems very similar to http://bugzilla.gnome.org/show_bug.cgi?id=320156 , although in en_GB (at least) I have a 12 hour clock option, and am/pm do now show, but back last year when I raised the gnome bug they didn't appear...
-- Time zone & locale should also affect Gnome time applet 12/24 preference https://launchpad.net/bugs/60516 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
