As a short followup on an older blog posting of mine:

So you are using librsvg's rsvg_term() in your code? If so then you are probably misusing it and triggering crashes in PulseAudio related code. The same way everybody should stop using libxml2's xmlCleanupParser() call, stop using rsvg_term()! It's really hard to use it correctly, and uneeded anyway. Also see this bug report.