Each time I make a query in the Address bar, there's a drop down menu that appears (full of suggestions). Is there any solution to disable it.
Under Firefox 3, if you want to delete an individual entry from the History, just highlight it (either in the History sidebar or in the address bar drop-down menu) and press Shift+Delete. Gone, never to bother you again! This method works for Windows users but won't work for Mac users.
For Mac user:
browser.urlbar.autoFill -> false browser.urlbar.matchOnlyTyped -> true browser.urlbar.maxRichResults -> 0 places.frequency.bookmarkVisitBonus -> 0 places.frequency.unvisitedBookmarkBonus -> 0