What does cleaning out the cache mean?
In order to improve efficiency the browser maintains on your local profile a set of many files you have already downloaded from remote sites. These files include XHTML, JavaScript, Flash, and images. When you revisit sites with your browser, instead of downloading all that material again, the browser determines that the cache may contain those files and so speeds things up for you. Occasionally it may be necessary for you to “clean out the cache”. This action means wiping out all the files stored in your local profile’s cache so that when you revisit a web site, the browser is forced to download fresh files. If it appears that the browser is not picking up newer material that you have published on your web site, then it is a good idea to perform this activity. On the browser select Tools | Internet Options, then click “Delete Files” in the Temporary Internet files section as shown below.