Comment 8 for bug 66550

It seems, though, that this has been fixed, at least after Lucid. I've just tested it there and Yoruba appears in the list of languages in gdm (see attachment).

The case of Swahili is different. It does not appear there simply because there are no Swahili translations available. It would be great to make Ubuntu available to Swahili speakers, so if anyone would like to contribute on that, the easiest way is to start a translation team:

  https://wiki.ubuntu.com/Translations/KnowledgeBase/StartingTeam

I'm thus marking the bug as Fix Released. If you experience this again, please feel free to reopen. Thanks!

Still, it would be great if someone could submit a translation suggestion as mentioned in my previous comment, so we could close the other bug.