Comment #22 on issue 492 by esteba...(a)gmail.com: Glamour browsers do not
release all subscriptions to announcer objects
http://code.google.com/p/moose-technology/issues/detail?id=492
anyway, there are still internal announcements who uses the on:do: form
which can not be maked as weak (because of the ephemerons issue), and we
need to check how to clean those... well, maybe tomorrow :)