I may be wrong ..
Originally firebug had to be really slow because of the interfaces available for debugging, the internal tool could work without slowing everything to a crawl.
With the newer debugging interface it seems like firebug can work and the browser can be fast.
Yeah, you are right. But i meant to say that firefox could have made firebug as its own developer tool and continue to make it better instead of building their own.
With the newer debugging interface it seems like firebug can work and the browser can be fast.