PostgreSQL backend did a fast shutdown due to software update. After reconnection, caldavd throws --- twisted/internet/defer.py:551:_runCallbacks twext/web2/http.py:505:writeResponse twext/web2/stream.py:750:beginProducing twext/web2/channel/http.py:714:registerProducer twisted/internet/_newtls.py:230:registerProducer --- Followed by --- twisted/internet/defer.py", line 551, in _runCallbacks current.result = callback(current.result, *args, **kw) twext/web2/server.py", line 643, in _processingReallyFailed self.writeResponse(response) twext/web2/http.py", line 505, in writeResponse d = stream.StreamProducer(response.stream).beginProducing(self.chanRequest) twext/web2/stream.py", line 750, in beginProducing self.consumer.registerProducer(self, True) twext/web2/channel/http.py", line 707, in registerProducer raise ValueError, "registering producer %s before previous one (%s) was unregistered" % (producer, self.producer) exceptions.ValueError: registering producer <twext.web2.stream.StreamProducer object at 0x808dd4d90> before previous one (<twext.web2.stream.StreamProducer object at 0x808564510>) was unregistered --- Followed by --- twext/enterprise/adbapi2.py", line 230, in _reallyExecSQL txdav/base/datastore/dbapiclient.py", line 76, in execute self.realCursor.execute(sql, args) pgdb.py", line 323, in execute return self.executemany(operation, [params]) pgdb.py", line 338, in executemany self._cnx.source().execute(sql) pg.ProgrammingError: FATAL: terminating connection due to administrator command SSL connection has been closed unexpectedly --- Repeated several times. There was no indication about malfunction to clients. While shutting down caldavd, I saw 10 disconnects in the PostgreSQL log. Axel PS: detailed log available on request --- PGP-Key:29E99DD6 ☀ +49 151 2300 9283 ☀ computing @ chaos claudius