Got it ! It was the fault of my ISP DNS which redirects to some 'related links' instead of returning an error when trying to reach a non-existant website.
But Windows doesn't act like Linux : When trying to reach an unqualified host name (foobar insetad of foobar.mysite.com for example), Windows (or at least my windows config) doesn't even try resolve it by the DNS, whereas Linux (Debian, Ubuntu, maybe others) and FreeBSD does. -- Firefox URL-bar search not working with a single word. https://launchpad.net/bugs/48605 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs