Putting a front Derailleur on a carbon frame
Carbon compound can definitely help. As the following link points out, it helps you avoid 'over torquing' to ensure that the component doesn't slip.

http://www.finishlineusa.com/products/fiber_grip.htm

In my personal domain, if there is carbon and carbon, or carbon and some other material, thou must use fiber grip. And a torque wrench. No questions.