Also, your Forums are nto recognizing you as logged in. More than likely this is a problem with Your Account module index.php and the modules.php file.
Have you recently applied the Security fix?

I also noticed you are using the NSN Your Account tweak. Are you sure you installed it correctly?

My educated guess tells me the root of your problem is Your Account module. The Forums are not recognizing your Loggin. SO, when you click a New TOPIC, of course it is going to take you to your account page because the Forums think you need to loggin...

mikem