
I don't know whether this is going to help at all, but have you tried exploring from the Firefox - Tools - Error Console option. What I suggest is before you try any further postings on Livecloud, you go to the Post Reply screen, then you go to this option. Select Clear when in the All tab to clear the listed error messages so you have a clear screen, then come out of the Error Console. Now try posting a comment on Livecloud, then return to the Error Console to see what has appeared.
On my Error Console, a whole list of Warning messages appear every time any page on Livecloud is accessed. I am guessing that you will also have these warning messages but presumably you will also have actual Error messages which I don't get. I suggest you post these Error messages (from the Error tab) in a posting to the Livecloud gurus in case this shows what is going on. By the way if you select any of these messages you get a further screen which shows a whole load of coding which means nothing to me but might to the gurus.
Hope this helps but it may just confuse matters.