Comment 2 for bug 418182

It should be fixed now.

The problem is that when you are translating a node, you are creating a new node, and as such you must have permission to create a new node of that type. Regular authenticated users were not allowed to post "news" or "story" content, and could not translate.

I would not have allowed all authenticated users to do so just now if they weren't all from launchpad. I still don't like it a whole lot, but I see the need for internationalization is more important than my desire to maintain total control. After all, they cannot edit or delete existing content, so there shouldn't be too much of a problem.