Why do I have to keep logging in? Site automatically logging users out?

[Edgar_in_Indy]

Did something change in regards to how long a user stays logged in? It used to be that, like most of the other forum sites I'm a member of, my browser would stay logged in for days at time, only seldom having to log back in. But it seems like the last several weeks blu-ray.com only keeps me logged in for a few hours at a time. The other sites I use have not changed in this regard.

More than once recently I have been browsing my collection to pick a movie, and then when the movie is over I go back to my computer with the blu-ray.com page still displayed, but when I go to enter the "watched" date and leave a rating, I doesn't work at first because I've been logged out.

Not a huge deal, but a bit annoying. Did anything officially change?