Quote Originally posted by olaf:
The manual makes reference to you being able to ferret out your own generals hidden vices....[/QUOTE]

I see the reference on page 28, but it does not specifically refer to your general, it just refers to "great men". I think the game presents all of your own generals' v&vs by default, and allows you to reveal them for generals belonging to other factions. That's been my experience at least.