in reply to Cookie->fetch problem
Have you checked what the cookies look like from the client side? You should be able to see them from developer tools built into any browser (RIP Firebug). It's possible that the system is not using a cookie mechanism for session tracking.
I don't see any obvious errors with your attempt to interrogate the cookies. (Update: But Eily did)
#11929 First ask yourself `How would I do this without a computer?' Then have the computer do it the same way.
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