Clearing and Removing Cookies using Firefox
At the top of the Firefox window on the menu bar, click on Tools then select Options.
Select the Privacy panel.
Click Show Cookies to open the Cookies window.
In the Search: field, type the first few letters of the name of the
site with problems (e.g. yahoo in this case tradingtrainer).
Select the cookies that come up in the list that match the site and click Remove Cookie.
Click Close to close the Cookies window.
Select the Advanced panel at the top of the Options Preferences window.
Click the Network tab.
In the Cache section, click Clear Now.
Click OK to close the Options window
Click Close to close the Preferences window.
