"I have kept this off list as it is not a Linux related question."
Ok so everytime I press reply to a list mail it defaults to the sender rather than the list.
"Yes I know why it is this way, I understand that it is my mail client, I am not complaining, just stating a fact" (Wayne, remembering list arguments of old)
This behaviour is totally repeatable until I actually intend to reply to the original sender rather than the list, then it defaults to "reply to list"