libchamplain 0.4.6 came out a few weeks ago. This release adds vala bindings. SRPM and spec file can be found at http://people.gnome.org/~ljernas/
Actually 0.6.1
libchamplain-0.4.6-1.fc13 has been submitted as an update for Fedora 13. http://admin.fedoraproject.org/updates/libchamplain-0.4.6-1.fc13
libchamplain-0.4.6-1.fc13 has been pushed to the Fedora 13 stable repository. If problems still persist, please make note of it in this bug report.