Correct. The login system that the forums use has been updated. This is a good thing. It's faster and more flexible and is allowing us to do some really cool things. However, websites that aren't getting frequent updates, like Wincustomize, are still on our older system. For these sites you'll have to log in once for the main site, and once for the forums. When Wincustomize gets some attention later this year, it will be updated to run on the new login system and this issue will magically dissappear.
Consider it growing pains.
I'll leave the post open for discussion, but the second it turns negative or goes off topic ima lock it up
(And thanks for making a seperate post, it really helps me organize issues and I appreciate it.)