Everything should now be set up to use SSL. To join the future of 1999, please use https://deadlycupcakes.org/forums/ in your bookmarks instead of http.
I recently changed the link on the base www.deadlcupcakes.org page to the forums to point to https://deadlycupcakes.org/forums . So likely Marco is correct, and you're using https now where you were once using http. You can still choose "forever" to keep yourself logged in, but it does require a cookie.