Hi
Internet pages do not come in as a one page picture, they comes in as a collection of many little files and pictures.
The browser Job is actually to assemble these files into what you see as a page.
One of the secure site's files is probably a script that uses edk.net, which is on the site that you visited
The script is on your computer but the site is gone so it cannot find the edk.net
Try to clean up the Browser temp files.
http://windows.microsoft.com/en-US/windows-vista/Delete-temporary-Internet-files
In addition, flash the DNS.
Open a Command Prompt and type in ipconfig /flushdns and press enter.
If the above did not work.
http://support.microsoft.com/kb/308260/en-us
Jack-MVP Windows Networking. WWW.EZLAN.NET