no notifications bubbles on 8.10

I am not getting any notification bubbles at all. Have not seen ione at all - I had to dig for screenshots to ensure that this was in fact a feature. Ie. when a new message is shown in the main window, I would expect some sort of popup notifying me about this message - not happening. I have "display bubbles" enabled in prefs.
Using gwibber 0.8

I get a lot of these, though

Traceback (most recent call last):
  File "/usr/lib/python2.5/threading.py", line 486, in __bootstrap_inner
    self.run()
  File "/usr/lib/python2.5/threading.py", line 446, in run
    self.__target(*self.__args, **self.__kwargs)
  File "/usr/lib/python2.5/site-packages/gwibber/client.py", line 931, in process
    self.show_notification_bubbles(view.message_store)
  File "/usr/lib/python2.5/site-packages/gwibber/client.py", line 884, in show_notification_bubbles
    message.first_seen and gintegration.can_notify and \
AttributeError: Message instance has no attribute 'first_seen'