Dave Mitchell wrote:
Those aren't files, they're directories; and presumably the directories have changed - eg by creating and then deleting a temporary file in the directory. In that case, rsync will have to update the last modified timestamp on the remote directorry.
Yes, sorry - I meant directories. No, the content of the directories doesn't change between consecutive runs of rsync. The time stamp of the directories hasn't changed, is 5th December (as reported by ls -l). I must be missing something obvious here, surely.