Hej,
we are working with a way to solve this issue. You are not the first one reporting that the forum timed out before finishing a message. Our current solution (on the drawing board) will consist in a small a-la-Google popup that will let you know your session expired and will give you the chance to copy the text you were editing by not refreshing the window. This solution should work for all the different systems that are currently integrated in the identification bar and all the new ones to come.
/d