Also, in the past, I've noticed that when I get logged out whilst writing a post, simply submitting the post is enough. It asks you to put in your login credentials again, and if you do so correctly, your post is submitted. There's no need to try to "go back" in the browser, the forum software has a degree more intelligence in that regard and temporarily holds your post whilst you login.
That may have been the past, but now in the present this doesn't work, not in IBrowse at least. Once a message is submitted after you've been logged out, that message is lost forever. Logging back in at that point just takes me back to the forum with no message to submit.
And since we're here, I have sent a few private messages to people on this forum over the last few weeks, and half of them just didn't get through. I sent a message to someone, didn't get a reply, so sent another one and they replied saying they never got the first one. My next replies went unanswered too, and I wonder if they even got through. I had no login problems when doing this either, and I have submitted messages both from IBrowse in AmigaOS and Opera in Linux, and both times it seems the messages were never received and read.