Random Header Not Working

Hi, Yesterday, I reported an issue with featured header images. I am still waiting for a resolution on that issue but thought I should open a separate topic. Today I noticed that the random header is sluggish. As I click through the website, there is only one picture on each page. This happened all morning with one image and now another image is appearing each time that I click on pages. Prior to yesterday's upgrade, this was working fine. I checked the settings and under Appearance => Header, Random is selected. I would appreciate any assistance that you can provide. Here's the url: http://divinew1.wwwss9.a2hosting.com/ Thanks, Michelle