Been going nuts on this. I have written a book on Word 2007 and, reviewing it, I noticed that on some pages the distance between the bottom edge of the page and the last line differ. When I attempt to fill that gap with the first line of the next page, it won't let me. Neither is it any use hitting "Enter" in that paragraph, because it only makes a difference some times. How is this rectifiable? I'm thinking it has something to do with a certain setting...