Cannot reproduce on current feisty. Firefox succeeded in showing /tmp/index.html, whose contents where 'asdfasd' (i.e. not HTML).
-- Omitting protocol ('file://') from URL causes firefox-bin to crash https://launchpad.net/bugs/85296 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs