Hi Sar, I saw you'd had a problem & deleted the second blank post. I don't know what happened - it must have been very annoying if you'd spent time composing an answer to the question and it didn't appear.
I do know that if you are writing your post and say you get logged out then you go to post it then it vanishes totally so I tend to then log back in and then click back to several times till I see my post again and then submit it. This will prompt an invalid session comment so I submit it again and et voila its back..
This took me several posts and very blue air to find a way back from losing the posts...