esto es grave?

cada ves que intento abrir una pagina web primero me sale
que debo ingresar una contraseña de usuario y el nombre y
cuando le doy a cancelar porque la olvide me sale esto:
While trying to retrieve the URL:
http://radio.gobiernoenlinea.ve/yvke

The following error was encountered:

Cache Access Denied.

Sorry, you are not currently allowed to request:

http:// lo que sea que ponga
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.