I think it's wonderful that your husband validated your feelings AND reassured you that there has been no call/no card. I'd say that exhange went very well!
Also, I suspect that the lock on posts comes not due to number of posts, but rather how much memory has been used. Just a theory I have.
Also, I agree, bunk beds for kids is a must! He'll need it when he has friends over for the night! Plus, he can have the top bunk anytime, which I always wanted, given a choice! Even in college, I wanted top bunk!
Sorry, I'm rambling...don't wanna take up too much space!