Line spacing is different in Word now. It's looser. Paragraph spacing is different, too--again, it's looser, more open, designed for easier reading. And in Word 2010 you can choose the look that you want with new paragraph spacing options.

You can find out more about line spacing and paragraph spacing in Adjust the line spacing between text or paragraphs, or you can peruse a compendium of resources.

And you can see the new paragraph spacing options in action in this video:

But if you want to give your document the all-single-spacing look, you can do that, too: Make my document look like a Word 2003 document.

Because it's also about time--yours.

-- Joannie Stangeland