Latin (As in church latin, not latin character encoding) in Ubuntu Karmic will work better than it did in Hardy/Intrepid. I had missed one of the packages that want hard coded locale data when I did the initial enablement patch.
For reference, when adding a locale:
- xlib (wants to know what locales are actually UTF8 and what compose sequences to use)
- gdm (wants to know what locales to display)
- glibc-locales (has the actual definition