freitasm: There's been no change in the way the login works. If you don't have auto login set when you login for the first time then it may log out during that time, but not because of the change.
Maybe, but it never did it before today. I could stay logged in all day (requesting updates and clogging up your servers) and it would stay logged in. Now, after 5 minutes, the updates are blank, and when I refresh the page, I am logged out.