Thunderbird broken

[Ryan VanMiddlesworth <lists@vanmiddlesworth.org>]

I've noticed in the last few days the Mozilla Thunderbird on Pure64 is broken.  
I've tried purging and reinstalling and this is what I get:

  cormallen:/home/ryanv# apt-get install mozilla-thunderbird
  [ snipped apt-get chatter ]
  Unpacking mozilla-thunderbird
  (from .../mozilla-thunderbird_0.7.3-3_amd64.deb) ...
  Setting up mozilla-thunderbird (0.7.3-3) ...
  Updating mozilla-thunderbird chrome  
  registry...find: /var/lib/mozilla-thunderbird/extensions.d/extension.*: No
  such file or directory
  no extension found ... installing zeroextensions.part to Extensions.rdf
  /usr/sbin/update-mozilla-thunderbird-chrome: line 125:  6396 Segmentation  
  fault      regxpcom >/dev/null

And when trying to actually run it, I get this:
  ryanv@cormallen:~$ mozilla-thunderbird
  selected locale: en-US
  /usr/lib/mozilla-thunderbird/run-mozilla.sh: line 159:  6465 Segmentation
  fault      "$prog" ${1+"$@"}

It's been broken for several days which kind of surprises me given 
Thunderbird's popularity.  Is this a subtle hint that I'm supposed to be 
migrating from pure64 to gcc3.4?  Speaking of that, is gcc3.4 now the 
preferred Debian AMD64 solution?

Thanks,
Ryan VanMiddlesworth