Well, it may sound strange and counter-intuitive, but when I am typing something in the address bar, I am typing a URL. Not searching God knows what in God knows where. I know that in FF3 I could be, but that's not what I am used to. So all non-URL stuff that smartbar throws at me is just a noise that I have to filter out.

As I said above - the transition logic for FF2/IE/etc users was not thought through AT ALL.

Given it's a smart bar, I expect it to be more flexible in its configuration, so that I could adjust its smarts as needed. E.g. it could have configurable weights that control how important a match in particular piece of data is. This way I would've zero'ed the importance of everything, but the matches at the head of the URL and happily went about my business without ranting :)

Again, this sort of flexibility is not a hard thing to implement nor does it pollute or burden the UI in any way. Why this or something similar didn't make it into a production release is beyond me.