Originally Posted by TheBang
Check your "You last visited:" time in the upper-right corner to make sure it corresponds to the time you think you last visited, and to make sure you haven't inadvertently started a session in the interim.
Thanks, I always forget that is there.
But it's been working fine for several days now. It was just that couple days of weirdness. Like maybe a constantly refreshing browser somewhere had me always 'here', but I checked all my devices and didn't have anything open anywhere. And if somebody else was logging in as me, they don't appear to have done any shenanigans.