Resetting Browser Cache and Deleting Cookies with IE7
Cleaning out your cache and deleting cookies might help with login trouble or if the gallery images aren't updating for you.
Click Tools on your toolbar.
Click on Internet Options from the drop down menu.
Another menu will appear.
Under Browser History, click on delete.
On the next screen, click Delete files next to Temporary Internet Files, then click Yes on the popup.
While on the same screen, click Delete Cookies next to Cookies.
Click Yes on the popup.