How to access storage device related events with Zeitgeist?

I am trying to get my mind around Zeitgeist, using the Python DBus API . To get the latest accessed files and application is not so hard, here is what I do: #! /usr/bin/env python from zeitgeist.client import ZeitgeistDBusInterface from zeitgeist.datamodel import Event, Interpretation, TimeRange, \ StorageState, ResultType zg = ZeitgeistDBusInterface() events = zg.FindEvents( TimeRange.always(), [Event.new_for_values(interpretation=Interpretation.ACCESS_EVENT)], StorageState.Available, 3, ResultType.MostRecentEvents) for e in events: event = Event(e) subjects = event.get_subjects() for s in subjects: print "subject", s.text, s.uri The interpretation flag Interpretation.ACCESS_EVENT returns all matching events, i.e. files and application accessed. Much more interpretation flags are available , but I do not succeed in getting results from events other than with Interpretation.EVENT_INTERPRETATION and its subclasses. More specifically I would like to access Interpretation.DATA_CONTAINER and its subclass, but it never returns any result. So am I doing something wrong in that case? Could you suggest anything?