Problem Staying Logged In

Any time I've logged in and clicked remember me, it never does. I have to log back in almost every other time I visit the site. Any idea what the problem/solution is?

This has been an issue for the past year or so. Now that we'll be losing a good amount of users who were only here for the scanlations, we'll be able to improve our infrastructure and servers should generally perform better due to the decreased load.