Dropbox isn't in my office although I really like Dropbox. However, legal compliance is important in an office environment and Dropbox simply does not provide the necessary data privacy to store business secrets or staff records.

Sorry, Dropbox.

(Yeah, alternatives are a problem: Wuala is dying and Spideroak isn't much better easier. Tresorit might be a future alternative but in spite of having their current version published as 2.x, they have still some way to go …)