More than one result available in a result returning from a query, storm moans about that

[dicortazar]

DBG: [08/Jan/2015-00:32:36] Retrieving activity of issue #431849 from https://bugs.eclipse.org/bugs/show_activity.cgi?id=431849
Traceback (most recent call last):
File "/usr/local/bin/bicho", line 25, in
retval = bicho.main.main()
File "/usr/local/lib/python2.7/site-packages/bicho/main.py", line 56, in main
backend.run()
File "/usr/local/lib/python2.7/site-packages/bicho/backends/bg.py", line 956, in run
self._process_issues()
File "/usr/local/lib/python2.7/site-packages/bicho/backends/bg.py", line 1052, in _process_issues
self._retrieve_issues(ids, url, self.tracker.id)
File "/usr/local/lib/python2.7/site-packages/bicho/backends/bg.py", line 1117, in _retrieve_issues
self._store_issue(issue, trk_id)
File "/usr/local/lib/python2.7/site-packages/bicho/backends/bg.py", line 1133, in _store_issue
self.bugsdb.insert_issue(issue, trk_id)
File "/usr/local/lib/python2.7/site-packages/bicho/db/database.py", line 195, in insert_issue
db_comment = self._get_db_comment(comment, db_issue.id, tracker_id)
File "/usr/local/lib/python2.7/site-packages/bicho/db/database.py", line 485, in _get_db_comment
DBComment.submitted_on == comment.submitted_on).one()
File "/usr/lib64/python2.7/site-packages/storm/store.py", line 1145, in one
raise NotOneError("one() used with more than one result available")
storm.exceptions.NotOneError: one() used with more than one result available