We were recently having an issue with a slider on one of our clients sites. We are using the BX Slider jQuery plugin in conjunction with Custom Post Types. We created a Custom Post Type for homepage sliders and each image was added using the featured image and classified as a single post. We then called each of these post types into the homepage (ie get_posts) and displaying them in an unordered list. Problem we found was that the Disqus plugin was injecting scripts into the generated BX Slider code, even though comments were turned off for the custom post types.
Anyway, the fix was pretty simple and straightforward.