Ubuntuforums.org password breach (question for Jeremy)

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http://www.linuxquestions.org – Color me stupid, lazy, whatever. But I was using the same passowrd and nym on Ubuntuforums as I use on LQ and/or AQ. Starting with LQ I successfully changed my password, and it updated my Iceweasel saved passwords - then I jumped to Android Forum (via the Main Menu) and was automatically logged in as usual, but Iceweasel hadn't changed. So I entered my old password and new password (twice) and it updated both on AQ and Iceweasel. Did I do this right? Or does changing my LQ password automagically change my AQ password? Jeremy, perhaps you could write a brief sticky how-to whatever on both (HowTos)