- Are you sure you deleted the right normal.dot (check the creation date of the new one)?
- Does it happen also with old documents, or only with new ones?
- Does it happen also if you select, say, a single character or a single word or a full paragraph, to underline or only when you select exactly one line on the screen?
- How exactly do you underline?
- How exactly do you undo (back out) this automatic action to reach the desired result?

Kees