Benefits of telling the truth to the Board of Directors

I remember in my first company that I spent a lot of time and energy trying to manage the boards expectations and perceptions of me and the company. I'm not nieve enough to believe that these factors don't matter but lately I've been struck by the benefits of accurate honest reporting by the CEO to the board.  The benefits as I see them are:

i) increased assistance and support from the board

ii) greater understanding of the company's true position

iii) increased trust

What do you think? Do you tell your board the truth about what's going on? What really keeps you up at night? If not, why not?