Ray, I wasn't refering to explicitly logging in, but just browsing to the site after a some time you weren't here.
Molly said that the users are kept logged in unless they explicitly log out for 3 hours after their last action, so if that time has passed, I presume you need to log in (even if you don't know it), something that wouldn't be needed if that time hasn't passed. This is all assumption.
From what I've seen, it seems that if you don't browse to the site for a certain period of time (I think it's 24 hours), you're not automatically logged in and you have to click log in (without entering your name and pass). I quite like the way this works.
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