Roger - there should be TWO gags appear on that page. I'm concerned if you're not seeing them both!
I need to ask people with PC's whether the Google strip of adverts shows on the front page too. My version of Internet Explorer doesn't show them for some reason, but it's an old version. They stopped updating it for Macs a few years ago when Apple brought out their own integrated Safari browser. I prefer Firefox by the way. The Google ads show in both those browsers.
The second cartoon, which Roger cannot see, is from a Google widget, so it maybe is that I.E. won't show anything from Google.