Magento

I need help to resolve this problem...has anyone an idea ???
Can someone tell me step by step what i can do to resolve the problem of :

“The page isn’t redirecting properly” and “This problem can sometimes be caused by disabling or refusing to accept cookies”.

Please help me… :((((

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I have same problem on magento 1.3.0 and magento 1.4.0 . please help me this problem The page isn’t redirecting properly