As a lot of you were rightfully complaining, the automatic Apport crash bug retracers had been offline for about two weeks. The main reason was that the hardy chroot became totally broken, due to bugs in fakechroot.
Yesterday I finally took some hours to track them down and fix them (see LP #228534). Now, after also dealing with the usual breakage of python-launchpad-bugs and Launchpad getting out of sync, the retracers have been restarted and are working happily again.
Now they are grinding through a huge backlog, I guess it will take them a few days to process all the crash reports that piled up.