Firewalls Can Prevent Web Pages From Displaying Properly
If you are having trouble viewing images on this site and you are using a firewall...
The problem with some firewalls ( Norton Internet Security in particular ) is that they may default to preventing your Web browser from sending referrer information between pages, and this referer information is required as part of the verification check at this site, used to stop certain internet abuses.
How referrer information works:
When you click to a new Web page, your browser notes the current page that you are on and it sends that information to the server of the new Web page. This way the server of the new Web page knows which page you viewed last. If you block referrer information, the server of the page you are requesting will not know what page you came from.
By default, Norton Internet Security (NIS) and Norton Personal Firewall (NPF) block this referrer information. Other firewalls may block this information as well. In order to allow referrer information to pass to a particular Website, you must create a rule for it.
To create a rule for Norton's NIS/NPF 2003 or NIS/NPF 2004, follow the instructions below:
Instructions for NIS/NPF 2003 or NIS/NPF 2004
Screen shot of NIS/NPF 2003 (NIS/NPF 2004 is similar):
See the Symantec site for more information.