Clear your cache should do the trick. To do this with the new Firefox version 4.+, click the Firefox button at the top left of your browser. In that window that appears, mouse over "'''History'''" then click on "'''Clear Recent History'''". In the time range, choose "'''Everything'''". Then click on the "'''Details'''", and in there un-check everything but cache. Once you do that click "Clear Now". Now, If you wanted to clear more then just the cache, that's fine, but more and likely, just clearing the cache is more then enough. Hope this helps.