This is a function of the way the two lists work, I think. The posts you mentioned were sent to cctech. As I understand it, that list is moderated to ensure it stays on topic. After they've been approved, they will make it onto cctalk as well. This causes a delay, and sometimes posts don't make it into the archive list until they are hours old. You'll notice these posts are now in both archives. The post with no subject had nothing to do with it, that's just a red herring. This is the behavior of the mailing list for as long as I remember, though I've only been on here a few years.