By some strange coincidence I got the dreaded corrupted iTunes library shortly after I read this article. Years of ratings, playlists, play counts, and whatnot

By some strange coincidence I got the dreaded corrupted iTunes library shortly after I read this article. Years of ratings, playlists, play counts, and whatnot are gone :-/. Last time this happened I couldn't find a way to fix this. Does anyone have any experience with the matter and/or tips for fixing this?