Posting this here before I email support—having a contradictory issue where the "Publish" button on a reply gives me an error, complaining that I have no headline or text (Headline? Methinks you are thinking of some other environ.), even though the box is all filled up with juicy replying goodness. And if I hit the back button or try and close the reply box, I get a message asking if I really want to ditch all that hard work.
Should I go back to the page I was replying to, and try to "Discuss" again, that speech bubble link is dead, and I need to reload the page. Sometimes it works fine the second time.
Expected behaviour: text posted as reply to other user's comment
Actual behaviour: error message about insufficient text returned, publication doesn't occur
Work around: refreshing the page I was replying to
Frequency: intermittent, maybe 10%
Environment: OS X 10.7.5, Opera 12.14