The most recent update of firefox has a very annoying issue: when I begin a search from the address bar, I often switch to another tab to read what's there while the previous tab is loading. Sometimes firefox makes both tabs load the same thing, and I have to navigate back (and sometimes login again) to the page I wanted to browse. I'm probably accidentally duplicating the search, but I don't know how, and I can't repeat the behavior when trying to figure it out. I was unable to find anything about this problem via google or the forum search.