Hmm, that's interesting and I've no idea why that happens. It would
also explain why a number of people say they've never seen the abc.

I wonder if we should go back to something different. After all, how
many people here list their messages in alphabetical order of subject?

I think I've found them, I've got an "abc" post for the 16/08/03 it show the
next posts as replies,
i.e 23/08 30/08 06/09 13/09,
May be that's why people can find them.