BuddyPress.org

I did if($current_user->ID) { in header.php . I have my own widgets as well that the output depends on whether the user is logged in and whether they are looking at a blog, profile, group, etc.

You should able to use is_user_logged_in(). I chose not to because every function call chews a few cycle putting data on the stack and taking it back off and I already have alot of custom code running that I’m trying to keep as slim as possible.