When you visit a web site, your browser downloads and stores, or caches, certain site files to your local hard drive. When you access the site a second time, your browser displays these cached files to speed up the loading process.
Sometimes when you make a change to your site, such as changing a user's photo, your browser displays the older cached file. Clearing the cache forces the browser to display the current content.
Clearing your browser cache
Visit these links to learn how to clear the cache for your browser: