If you are still unable to log in, possible solutions are:

• Clear your web browser's cache of visited web pages. From the browser's tool bar, choose Tools-» Internet Options-» General-» Clear History.
• Make sure the web browser's security setting allows you to accept cookies. From the browser's tool bar, choose Tools-» Internet Options-» Privacy. Set privacy to medium or low.

These instructions apply to Internet Explorer. If you are using AOL, open AOL to connect to the Internet. Then minimize the AOL browser and open Internet Explorer.

Please Note: If your ISP has implemented a pop-up blocker utility, you may need to disable it to access databases through our proxy software.

A Note About Firewalls:

"Most ISPs do not limit the areas their users can access on the Internet, so home users do not tend to encounter problems with firewalls. However, corporate sites often do employ firewalls and may be highly restrictive in what their employees can access. If you provide content for a given corporate site, the corporate site may be willing to open access through their firewall to your EZproxy server. However, if a corporate site refuses to open access, your users will not be able to access EZproxy."

"It's important to understand that corporate firewall restrictions are not unique to EZproxy, but are actually encountered when implementing any proxy server solution for remote access."

from the EZproxy support site
http://www.usefulutilities.com/support/faq.html