Ah, thanks! Balsamic words for my bitter mood :)
Most probably meebo doesn't properly register the notification (it's
an API introduced in Eclair); other apps have the same problem
(notably
last.fm), so I'll probably change the way the trigger works
so that it catches all services - my understanding is that the
majority of apps don't properly stop their services (thus making the
trigger useless for them) but I might be mistaken; your feedback will
clear this out!