If you haven't fixed this already and billboard still shows you your own text in the app (which I doubt), copy it all and in terminal write:

Coderus' script takes the gconf value that gets written by Billboard and stores it in the variable $text. Then it replaces that value in gconf with "Updating..." and immediately after that it writes over that with the original text. This forces an update in Billboard. It works like a charm but probably the last command didn't get executed when you tried it in terminal. It should be used as a script so that all commands get executed.

As your original text is probably lost, you'll just have to write it again...