Beware that there is no consensus that this is a good thing.

From Daniel Bernstein(qmail creator) at http://cr.yp.to/qmail/qmailsec-20071101.pdf

"I have become convinced that this “principle of least privilege” is fundamentally wrong. Minimizing privilege might reduce the damage done by some security holes but almost never fixes the holes. Minimizing privilege is not the same as minimizing the amount of trusted code, does not have the same benefits as minimizing the amount of trusted code, and does not move us any closer to a secure computer system."