I've noticed that since we upgraded the Austin Improv Forums to phpBB 3, searching the archive of posts has been more or less broken. New posts made since the upgrade are found, but old posts don't show up.
Fortunately, I just figured out how to re-index all the posts, and after about an hour, it's all done.
Now you can search for Frogtown Hollow Jubilee Jugband, and it'll actually turn up some results.