I've noticed an issue with the media keys on the Mac keyboard.
Whenever using Rdio to listen to music I can use the Media keys to pause/play tunes etc. But as soon as I open Fireworks, either from launch or go back in to it after sitting in the background, my media keys default back to iTunes and opens it up to play music from there. If I go back in to Rdio again the buttons work as usual until I open up Fireworks again.
It's not a massive issue in terms of using fireworks itself, just a little annoying and thought I'd post something about it.
Using Dreamweaver has no effect on it at all