Description of problem: We've been blocked updating GLib-GObject-Introspection for quite a while since it depended on a unstable development release of perl-GLib. A month ago though, the new stable version 1.280 was released. http://search.cpan.org/~tsch/Glib-1.280/ Could you upgrade to that in both F18 and F19 asap, so we update Glib-GObject-Introspection at last.
perl-Glib-1.280-1.fc18 has been submitted as an update for Fedora 18. https://admin.fedoraproject.org/updates/perl-Glib-1.280-1.fc18
Package perl-Glib-1.280-1.fc18: * should fix your issue, * was pushed to the Fedora 18 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing perl-Glib-1.280-1.fc18' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2012-20120/perl-Glib-1.280-1.fc18 then log in and leave karma (feedback).
perl-Glib-1.280-1.fc18 has been pushed to the Fedora 18 stable repository. If problems still persist, please make note of it in this bug report.