Not sure why the forums are logging you out. Have you tried clearing your browser cache, internet history and cookies? And also when logging in do you tick the keep logged in box?
For the awards, the url should be
http://forum.classicamiga.com/forum/awards.php with the/forum/ but, which is missing from the one you posted above. Again it might be directing you like that because of old cookies or internet history. It works fine from my end.
And finally, arcade high scores. As mentioned in the home page welcome message, saving of high scores from the arcade is currently broken since the update. This is effecting a lot of people using this arcade component and we are all waiting for someone to find a solution.