problems with some WWW sites

[Vicente Torres <vtorres@die.upv.es>]

I am running a potato with netscape 4.7
and I can not access following URLs:

http://www.upv.es
http://www.sony.es

I have Java and javascript enabled.
any idea? 

(any other URL seems to work OK)

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Vicente Torres Carot                      l.Y             ^.
Universidad Politécnica de Valencia       /\               __  "Doh!"
Departamento de Ingeniería Electrónica   i            ___/"   "\
Ctra. Nazaret-Oliva, s/n                 |          /"   "\   o !
46730 Grau de Gandia (Valencia)          l         ]     o !__./
SPAIN                                     \ _  _    \.___./    "~\
                                           X \/ \            ___./
Tel.: (96)2849300                         ( \ ___.   _..--~~"   ~`-.
FAX:  (96)2849309                             ` Z,--   /            \
                                             __.  (   /       ______)
"I don't apologize. I'm sorry, but that's      \   l  /-----~~" /
just the way I am." -- Homer Simpson --         Y   \          /
##############################################     | "x______.^
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