EDIT:
From the all knowing, ever accurate, ultimately scholarly wikipedia,
"Moore acknowledged that due to the 2007 Writers Guild of America strike, the series might not be completed. Production was suspended on Nov. 16, 2007, all personnel have been laid off, and only 13 of the 22 episodes have been completed (including 2 episodes comprising "Razor"). Completion of the season is not a certainty."
Links
Ron Moore's personal blog where he admits concern that Galactica may never finish
Article about Ron's blog
So eleven more episodes, and not likely to be anymore until 2009 or maybe never (though that blog seemed like Moore was being a bit over dramatic, BSG is pretty popular and a pretty big cash horse to be shot so quickly. I am pretty sure once the strikes are over that nobody is going to say, "Ah, let's just forget about BSG and call it good shall we?" There'll be high demand for the last eps and plenty of money around to ensure that they get done.