Problems using Safari in Leopard

Hello,
I've noticed that since I upgraded to Leopard on my Macbook Pro, I keep getting error messages when browsing Creative Cow using Safari. Sometimes I can browse as usual with no problems for a whole day, but other days like today, anytime I click on something in the Cow I get the following page at which point I have to launch Firefox to use the Cow. Any help you can provide would be great.

Thanks a lot.
Santiago



Bad Request

Your browser sent a request that this server could not understand.
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