soledad on urchin in zombie state

last log entry is 10 days ago:

root@urchin:~# tail /var/log/soledad.log 
2014-02-18 17:54:37+0000 [-] Received SIGTERM, shutting down.
2014-02-18 17:54:37+0000 [-] (TLS Port 2323 Closed)
2014-02-18 17:54:37+0000 [-] Stopping factory 
2014-02-18 17:54:37+0000 [-] Main loop terminated.
2014-02-18 17:54:37+0000 [-] Server Shut Down.
2014-02-18 17:57:33+0000 [-] Log opened.
2014-02-18 17:57:33+0000 [-] twistd 13.0.0 (/usr/bin/python 2.7.3) starting up.
2014-02-18 17:57:33+0000 [-] reactor class: twisted.internet.epollreactor.EPollReactor.
2014-02-18 17:57:33+0000 [-] Site (TLS) starting on 2323
2014-02-18 17:57:33+0000 [-] Starting factory 

ps aux|grep soledad
root      3767  0.0  0.0 112260  1272 ?        Sl   Feb18   3:02 /usr/bin/python /usr/bin/twistd --pidfile=/var/run/soledad.pid --logfile=/var/log/soledad.log web --wsgi=leap.soledad.server.application --port=ssl:2323:privateKey=/etc/x509/keys/leap.key:certKey=/etc/x509/certs/leap.crt

root@urchin:~# nc -nv 0.0.0.0 2323
(UNKNOWN) [0.0.0.0] 2323 (?) open

drebs, can you have a look at this please ? i didn't touched it because i think it's good to examine in this state. How could we detect this in the future ?

(from redmine: created on 2014-02-28, closed on 2014-03-12)