At the moment, I have the latest notification in the global inbox, content of which does not correspond either to the comment itself or the copy of it on "recent responses" page. This seems like the comment was edited and the updated version was not copied to the global inbox.
ETA: OK, now this looks more coherent.
@Tobias: threaded comments? Is that a
and ends there. The answer is balpha's greasemonkey script btw