What's taking so long? I want your third book now! (updated)

I've mentioned a few times that there's a third book in my series called The Dark and Hollow Places that is already written and should be coming out Spring 2011.  I honestly can't be more thrilled about the emails I've been getting asking about it and wanting it sooner!*  One question I've been asked a few times is why, since the book is already written, is it taking so long for it to come out?

This is an excellent question and a perfect blog topic :)  The short answer: with all the different ...