By clicking the "remember me" box your computer should retain a cookie that should keep you logged in anytime you are at the site. So make sure your computer is set to accept cookies. Other than that, I'm sorry I don't know much about this computer stuff to help you (and no doubt someone else will come on here and tell me I'm full of it
). I'm having the same problem on another website, luckily it doesn't boot me off in the middle of a post but I have to log in every time I go there, even after clicking the "remember me" box.