I have followed this thread and my situation is getting worse. I had a similar situation with 2.8.4. I could not find the Publish button on Add New Post and no Update button on editing posts.
Well, I tried the advice to just do 1 column and go back to 2-columns and now everything is gone from the 2nd column. I have logged out and logged back in using IE8 and Firefox. EVerything has moved and staying at 1 column. Under the publish section, there is nothing, no button, nothing.
Something bad is happening here with this version. How can I salvage this situation? I am dying here. Help.
Matthew