I just couldn't be bothered trying to recreate it and my mind had already moved onto writing other posts on other threads, no 'attack' intended, Joe. I may recall most of it much later.

"If you highlight [CTRL-A] and save [CTRL-S] your messages before you submit them, you can easily rectify the problem. If you didn't do that, try the BACK button on your browser"

Works ONLY if you use a single tab on Firefox all the time. If you press 'send' and close the window which now just shows you the thread list, then open another new thread in a new tab (I often run down the list and open several new tabs at once) to post in, it's gone forever, and can not be got back.