Comment 4 for bug 285238

Tentatively documented at <https://wiki.ubuntu.com/IntrepidReleaseNotes#Systems%20installed%20from%20pre-release%20daily%20images%20may%20be%20missing>, but I think this section could use improvement still; in particular, since language-selector won't do the trick, we don't have very good information about how the user can correct the problem.