I promised to update my FusionDebug 2.0 review and now I feel that I've used it enough to do so. Wow! This is a great tool. Very solid and easy to use. It's cut my development time in half. I've used it extensively with my AJAX implementations. It has provided me with some terrific insight into each request. I'm combining the use of FusionDebug with FireBug so that I can debug an entire page request , start to finish. I suggest that anyone developing Coldfusion applications download this terrific tool.