I did not think of the server. I will see if I can figure that out now. I have cleared the cache in the blog and in my browser.
I have tried switching themes, but the problem is that when I am logged in, it shows the most recent post for me. When I log out, it will show it for awhile but it eventually reverts back to the May 11 post. I may try that some time in the middle of the night when I don’t have to worry about all 10 of my visitors see my wonky theme while I test.