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/
libchamplain-0.4.6-1.fc13 has been submitted as an update for Fedora 13.
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.