Thanks for muddling the topic with OT. Bob, Simion is right, you've a serious conflict of interest if you take money from Avast. Simion, you could have been more courteous, and you should have taken the off-topic discussion to somewhere else (and kindly posted a single post here to inform the readers where you have more information about the issue).
Back to topic. The changed cookie I did "hack" yesterday only worked yesterday. Today it seems that the server side PHP session expired and I'm again seeing the redirecting after 1 hour.
Seriously, Avast, you should fix this. What if an user is writing a new post and the session/cookie expires while he/she is doing it and then he/she clicks the post button? Is the written message lost? I haven't got the time to start testing that too.. and besides, it's not needed to prove that this annoyance should be fixed.