When you are using a dynamic website like Sakai@UD, web browsers might show you an outdated version of a page (what is called a "cached" version of the page). By default, browsers keep previous versions of a page to accelerate page loading, but this behavior might prevent you from displaying the newest information.
Browsers listed on this page:
Note: This process also works with Internet Explorer 8.
In the Tools menu, click Internet options.

In the General tab, click the Browsing history's Settings button.

Select Every time I visit the webpage, and then click OK at the bottom of the page.

Click OK again and close all your browser windows and restart Internet Explorer to enact the change.
In the Tools menu, click Options....

In the Advanced section, Network tab, set the Offline Storage cache space to 0 (zero), then click OK.

Open a browser window and type about:config (without typing http:// before), then press the return key. Scroll down to the browser.cache.check_doc_frequency setting and make sure that the value is set to 3. Double-click on the number to change the value if necessary.

Close window, exit and restart Firefox to enact the change.
In the Firefox menu, click Preferences....

In the Advanced section, Network tab, set the Offline Storage cache space to 0 (zero), then click Clear Now.

Open a browser window and type about:config (without typing http:// before), then press the return key. Scroll down to the browser.cache.check_doc_frequency setting and make sure that the value is set to 3. Double-click on the number to change the value if necessary.

Close window, exit and restart Firefox to enact the change.
This page has been largely inspired by "Lesson 6: Setting your Browser Cache" by Gayle L. Fornataro from Virtual Valley.