Custom module on front page remains on checkout

I have a custom_mod slide show being displayed on my front page, which does not appear on any other page. However, when I put something in the cart, and then go back to the front page (home page, and slide show reappears as expected), and then click on proceed to checkout from right side cart, the slide show custom module remains on the page with the checkout stuff beneath it. I was expecting the slide show to disappear just like it does when I go to any of the other pages. Can you help?