Any solution for this problem "Cache Access Denied"

ERROR

Cache Access Denied

---

While trying to retrieve the URL: http://www.thecheesecakefactory.com/

The following error was encountered:

• Cache Access Denied.

Sorry, you are not currently allowed to request:

    http://www.thecheesecakefactory.com/

from this cache until you have authenticated yourself.

You need to use Netscape version 2.0 or greater, or Microsoft Internet Explorer 3.0, or an HTTP/1.1 compliant browser for this to work. Please contact the cache administrator if you have difficulties authenticating yourself or change your default password.

I have cleared all the cache and worked on the proxies too , but not able to solve this .. Any answers please