This bug was fixed in the package thunderbird - 15.0~b3+build1-0ubuntu1

---------------
thunderbird (15.0~b3+build1-0ubuntu1) quantal; urgency=low

  * New upstream release from the beta channel (THUNDERBIRD_15_0b3_BUILD1)

  [ Chris Coulson <email address hidden> ]
  * Update globalmenu-extension to 3.4 prerelease r435
    + Fixes for LP: #1025011 - HUD search crashes Firefox when Firebug
      is installed
      - Provide our own binding for menupopup nodes which derives from the
        default binding and makes the "state" property work as if there
        were a frame
      - Make all menu nodes reference counted, and hold a strong ref when
        dispatching events, in case the event results in the removal of menu
        nodes
    + Keep the menu we export in sync with the document tree all of the
      time, rather than only when the menus are on screen. The HUD likes to
      open submenus without opening any of its ancestors, which can result in
      us handling events on menu nodes that are no longer in a document
      if an ancestor responds to a bubbled-up event by removing its
      children
    + Ensure we always null check the result of nsIDocument::GetCurrentDoc
    + When tearing down a menu, make sure that we empty out our DbusmenuMenuitem
      in case the parent reuses that item for another menu. Fixes a memory leak
      and an issue where Firebug menu items are duplicated indefinitely each
      time a menu is opened
  * Update eds extension to 0.5 prerelease r141
    - Lots of refactoring
    - Added proper support for evolution-data-server 3.6. It actually
      works now
    - Make contact list commit async
    - Fix LP: #919612 - cannot write contact, with "Could not save nsIAbEDSCard
      property: SecondEmail" errors in the error console
    - Make setting dates work as expected
    - When selecting a generic image, clear the actual image property rather
      than saving the generic image pixel data to EDS
    - Ensure that phone numbers are displayed in the preview pane for EDS
      contacts
    - Use the upstream chat tab for managing IM handles. This requires
      Thunderbird 15
    - Ensure that chat handles appear in the contact preview pane
    - Make the preferred mail format option work (was always disabled in
      the edit UI)
    - Support storing Google Talk ID's in eds
    - Support Twitter as an IM account type (new in eds 3.6)
    - Implement nsAbEDSCard.deleteProperty
    - For number fields, handle the case where the passed in value converts
      to NaN
    - Implement nsAbEDSCard.copy and make nsAbEDSDirectory.addCard use this
    - Ensure we dispatch a notification when a directory name changes
    - Implement nsAbEDSDirectory.modifyCard and hide nsAbEDSCard.commit
    - Make contact list creation work properly
    - Display the year field in the contact editor for the anniversary date.
      This is supported fine by eds
    - Make copying contacts between EDS and non-EDS addressbooks work more
      reliably, rather than dropping fields such as PrimaryEmail
    - When copying a Thunderbird contact to an EDS folder, add the Thunderbird
      custom fields as "X-THUNDERBIRD-CUSTOM-*" vcard properties, rather than
      adding them to the note field
    - Don't unload libraries on shutdown. May fix a common shutdown crash

  [ Adam Conrad <email address hidden> ]
  * Add no_neon_on_arm.patch to skip the NEON tests on ARM, since we
    don't build with NEON by default on either of our ARM architectures
 -- Chris Coulson <email address hidden>   Wed, 25 Jul 2012 17:41:41 +0100