So, just recently, I've been getting logged out even though I select the "remember me" button. For years, all I've had to do is just open the site and boom, I'm already logged in. Now, I have to login manually. And if I go visit other forums and come back here, same thing, even though this site was still open under a different tab.

What gives? Can I fix this? This doesn't happen on other forums I have setup under different homepage tabs.