Sakai CLE is designed to work with modern browsers. Use the latest versions of Firefox (Mozilla), Safari (Apple), Chrome (Google), and IE 9 (Microsoft Internet Explorer aka IE) and IE 8. Sakai does not work with IE 7 and earlier, or with Firefox 10 and earlier. For more information, visit https://confluence.sakaiproject.org/display/DOC/Sakai+10+Browser+Support
Each browser interprets a website in a slightly different manner, which means that it may appear differently using different browser versions. It is important to keep your browser up-to-date to be able to access newer features. Also note that often older versions are no longer supported.
Clearing your Cache