Firefox's icon in unity should propose Private navigation

Thanks, but this is a wontfix until Firefox supports per-window private browsing (see https://bugzilla.mozilla.org/show_bug.cgi?id=727335#c9)

Firefox will support per-windows private browsing:
http://ehsanakhgari.org/blog/2012-11-30/per-window-private-browsing-ready-for-testing-now-2

https://bugzilla.mozilla.org/show_bug.cgi?id=463027

This will be fixed in the next nightly build

This bug was fixed in the package firefox - 20.0+build1-0ubuntu0.12.10.3

---------------
firefox (20.0+build1-0ubuntu0.12.10.3) quantal-security; urgency=low

  * New upstream stable release (FIREFOX_20_0_BUILD1)
    - see LP: #1161422 for USN information

  * Update globalmenu-extension to 3.9
    - Firefox 20 compatibility fixes
    - This is the last version of this addon, and will be dropped in the
      next Firefox release
  * Drop patches fixed upstream
    - remove debian/patches/ionmonkey-hardfp-support.patch
    - update debian/patches/series.in
  * firefox-gnome-support needs explicit dependency on libnotify
    - update debian/control{,.in}
  * Add support for autopkgtest, package the xpcshell, reftest and
    mochitest testsuites and migrate the xpcshell-tests, reftest, crashtest,
    jstestbrowser and mochitest targets to this. Note that tests that can't
    be ran as an autopkgtest (eg, if they require write permissions to the
    application directory) will still be ran at build time
    - add firefox-testsuite package in debian/control.in
    - update debian/control
    - add debian/firefox-testsuite.install.in
    - add debian/firefox-testsuite.links.in
    - update debian/build/mozbuild.mk
    - update debian/rules
    - drop xpcshell-tests, reftest, crashtest, jstestbrowser and mochitest
      targets from debian/build/testsuite.mk, add xpcshell-tests-build
      and the ability to run xpcshell-tests with our own reduced manifest
    - add debian/tests/control
    - add debian/tests/crashtest
    - add debian/tests/jstestbrowser
    - add debian/tests/mochitest
    - add debian/tests/reftest
    - add debian/tests/xpcshell-tests
    - add debian/testing/run_mochitest.in
    - add debian/testing/run_xpcshell_tests.in
    - add debian/testing/run_reftest.in
    - add debian/testing/testrunhelper.py
    - update debian/config/mozconfig.in to always build with --enable-tests
    - add debian/testing/xpcshell-build.ini
  * Ensure that the directory provider returns all searchplugin paths during
    the search service xpcshell tests
    - add d/p/test-fixes/xpcshell-search-fix-browser-dirprovider.patch
    - update debian/patches/series.in
  * Fix various tests that assume that either the application directory or
    test directory can be written to
    - add d/p/test-fixes/xpcshell-docshell-no-writes-to-appdir.patch
    - add d/p/test-fixes/xpcshell-contentprefs-no-writes-to-appdir.patch
    - add d/p/test-fixes/xpcshell-exthandler-no-writes-to-appdir.patch
    - add d/p/test-fixes/xpcshell-ctypes-no-writes-to-appdir.patch
    - add d/p/test-fixes/xpcshell-xpcom-no-writes-to-testdir-or-appdir.patch
    - add d/p/test-fixes/xpcshell-libpref-no-writes-to-testdir.patch
    - update debian/patches/series.in
  * Export NO_PNG_PKG_MANGLE as optipng breaks tests that are dependent
    on image format / size
    - update debian/build/mozbuild.mk
  * Don't test that the addon selection dialog appears in test_bug596343.js,
    as we disable this
    - add d/p/test-integration/xpcshell-disable-addon-select-dialog-test-for-adt.patch
    - update debian/patches/series
  * Don't write a log file to the script directory from mochitest
    - ...