There's also a dropdown showing up the first time you use the url bar. Depending on the value set for browser.urlbar.suggest.searches on that first run, the dro

There's also a dropdown showing up the first time you use the url bar. Depending on the value set for browser.urlbar.suggest.searches on that first run, the dropdown will either tell you about suggestions with a button leading to the prefs where you can disable them, or ask you whether you want to enable or disable them. I think there were talks about not presenting the search box for new profiles, too, but it looks like that hasn't happened yet.