One way to check is to see if it shows up in your Admin => Manage (Page or Post). As well, when you go to “create a new post”, it shows you drafts on that page. Do you see anything? What was the name of the “post” or “page”?
I have the same problem, which was not the case one hour ago. I think it might have something to do with it – but I am not skilled in naming technical problems. It can be everything. Neverthelee I am “happy” that I am not the only one with this.