I noticed that the Random link at the top always takes you to the HTTP version of the site, regardless of which you were using before. This might cause logged-in user to be signed out. Donno if anyone was having a problem with that, but if you were, it should be fixed now.
Edit: Oops, it was worse than I thought, the Home link did it too. Fixed that as well. Let me know if you notice any more places where this happens.
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