It's very strange.
Kees
when formatting paragraphs in a 10-page paper in word xp from single line spacing to 1.5 lines, some paragraphs get missing. sometimes the formatted paragraphs re-appear but only after some time, say 2-3 minutes. some formatted paragraphs do not re-appear.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic