Hrm, I still see it on the Console tab. The thing that bothers me is now Firebug truncates long AJAX responses. I tend to work with heavy amounts of JSON data, so this renders the new Firebug useless to me.
Just checked it, and I cannot see them on Console, only the Net tab (Firefox 3.0.12, firebug 1.4). Perhaps its different in Firefox 3.5