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I'm using an internet at an apartment where they utilize a captive portal. All seems to be fine, but sometime when I try to use I got a message saying that "You are already logged in" but I can't use the internet. I had to manually click logoff, only then I can login again.

Do you have any idea of the cause of this? The server is Ubuntu server 10.04 and the gateway software is propritary.

Here is some info

Idle timeout = 10 mins
session timeout = unlimited
simutanous user = 1


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