I am often a day or three late myself on these sort of things, so I know how things can slip by one. None the less, that is an excuse that only works for a limited time and it is clearly not acceptable for people to let it drag on indefinitely.

I think the idea of not allowing anyone to participate until they have caught up is an entirely sound one and should reduce the problem of non-delivery in short order (Famous Last Words, Vol. 6)...

Cheers, Bob.