Just an FYI Mark.  I was looking at a discussion Second Attempts  from my in box and clicked on "Show Earlier".  When I did so, a red pop up occurred at the bottom of the page saying something to the effect that the "content couldn't be saved due to an error, you may have been logged out....if this problem persists..."  (I wasn't trying to save anything, just see more of the previous comments)  Second time I clicked on "Show Earlier"  nothing happened at all.