I type in my login information, and hit sign in, but nothing happens, just refreshes the page. I then proceed to click on Forums and now I'm signed in. And It seems to be signing me out everytime I close the page/go to a new one, and I should still be signed in, as long as I don't close my browser.

I use Google Chrome if that helps and it didn't do this till today.

This probably happened because you visited the site without the "www" in the URL. I am going to be forcing this from my end in an upcoming fix, so it shouldn't be a problem in the future.

Yep, it's fixed Alex :D