I am split between 'No, the cache has been archived, end of' and 'It depends on the circumstance'.
Caches can be archived for a variety of reasons. Cache listings can also be locked down by reviewers so that no one can post a log. The fact that listings are not automatically locked when archived must mean that Groundspeak care not if you log them.
The Bore.. if my plans for that day had been different I would be very unimpressed at this moment. Had kids football plans for that day, and so did not go. If hadn't had those plans I would of been going. However, as it was archived for safety reasons, if I had planned to go I would have not gone, as there was not smiley/attended to get out of it (though not the whole reason to go there I know). But wait... it looks I could of got a smiley out of it! Groundspeak are daft.
Anyway, if I were that upset about it I could still log the event anyway and get my smiley because I don't need to sign a log book. Groundspeak are doubly daft.
Now it's my turn to say the triply daft thing. If I was really upset about it should I rally around enough people to log it so that it would turn Mega? What would happen then, as no one would of signed a log book? I can be just as daft as Groundspeak.