This bug was fixed in the package firefox - 13.0~b3+build1-0ubuntu1

---------------
firefox (13.0~b3+build1-0ubuntu1) quantal; urgency=low

  [ Chris Coulson <email address hidden> ]
  * New upstream release from the beta channel (FIREFOX_13_0b3_BUILD1)

  * Refresh build-depends:
    - Bump minimum GTK version to 2.14 as we build with GIO support
    - Add minimum requirement for glib (2.18)
    - Drop libidl-dev, this doesn't appear to be needed now
    - Bump minimum NSPR version to 4.9.0 for --enable-system-nspr builds
    - Bump minimum sqlite version to 3.7.10 for --enable-system-sqlite
      builds
    - Bump minimum NSS version to 3.13.2 for --enable-system-nss builds
  * Refresh patches:
    - update debian/patches/ubuntu-ua-string-changes.patch
    - update debian/patches/ubuntu-codes-google.patch
    - update debian/patches/dont-include-hyphenation-patterns.patch
  * Clean up the file exclude list and add comments for excluded files
    - update debian/build/create-tarball.py
  * Make it easy to run Firefox in valgrind for builds that are compiled
    with explicit valgrind support
    - update debian/firefox.sh.in
  * Bump debhelper compat to 7
    - update debian/apport/blacklist.in
    - update debian/apport/source_firefox.py.in
    - update debian/compat
    - update debian/config/mozconfig.in
    - update debian/control.in
    - update debian/firefox-dev.install.in
    - update debian/firefox-dev.links.in
    - update debian/firefox-globalmenu.dirs.in
    - update debian/firefox-gnome-support.install.in
    - update debian/firefox.dirs.in
    - update debian/firefox.install.in
    - update debian/firefox.links.in
    - update debian/firefox.postinst.in
    - update debian/firefox.preinst.in
    - update debian/firefox.sh.in
    - update debian/pkgconfig/libxul.pc.in
    - update debian/pkgconfig/mozilla-nspr.pc.in
    - update debian/pkgconfig/mozilla-plugin.pc.in
    - update debian/rules
    - update debian/usr.bin.firefox.apparmor.10.04
    - update debian/usr.bin.firefox.apparmor.10.10
    - update debian/usr.bin.firefox.apparmor.11.04
    - update debian/usr.bin.firefox.apparmor.12.04
    - update debian/usr.bin.firefox.apparmor.9.10
  * Override 2 embedded-library lintian errors
    - update debian/firefox.lintian-overrides.in
  * Drop debian/patches/distro-locale-searchplugins after landing of
    bmo: #515232
  * Don't hardcode general.useragent.locale to en-US, now that it's used
    for searchplugin localization. This means we can drop this pref from
    ubufox
    - add debian/patches/dont-override-general-useragent-locale.patch
    - update debian/patches/series
  * Drop patches fixed upstream
    - remove debian/patches/no-sps-profiler-on-unsupported-archs.patch
    - remove debian/patches/avoid-dbus-roundtrip-for-httpchannel.patch
    - update debian/patches/series
  * Apport hook improvements:
    - Add support for reporting preference defaults that are set by extensions
    - When reporting preferences, record the source of each preference
    - Report plugin packages for plugins that are installed with the
      package manager
    - Add some addon manager related prefs to the whitelist
    - Display additional metadata in the extensions report
    - Take "default-to-compatible" in to account when determining whether
      the user is running incompatible addons
    - Attach submitted crash ID's to bug reports
    - Report if files in the profile folder have broken permissions
    - Report errors when parsing preferences and plugins
    - Handle preferences spanning across multiple lines
  * Fix LP: #993273 - Exception thrown in Apport hook with preferences
    which have empty values
    - update debian/apport/source_firefox.py.in
  * Update compare-locales to 0.9.5
  * Disable crash reporter on quantal
    - update debian/rules
  * Fix a build failure in TestPoisonArea.cpp with gcc 4.7
    - add debian/patches/gcc-4.7-fix-in-test-poison-area.patch
    - update debian/patches/series

  [ Jamie Strandboge <email address hidden> ]
  * adjust apparmor profile to deny reads to @{PROC}/[0-9]*/net/dev. Patch
    thanks to James Troup (LP: #955066)
  * adjust apparmor profile to deny reads to @{PROC}/[0-9]*/net/wireless.
    Patch thanks to James Troup (LP: #974141)
 -- Chris Coulson <email address hidden>   Wed, 09 May 2012 14:26:15 -0700