I'm using WassUp 1.6.2 on WP 2.6.1 and I restricted my blog access to signed up users only by a different plug-in. Nevertheless, there is a remarkable amount of unknown users recorded even if no spam or spiders are logged though. The supposed unrecognized users contribute to more than the half of all tracked activity which is hard to believe for me. The plug-in to restrict the user access works well and my blog is known only under my 30 something registered users.
I'll appreciate any help or advices relating to this issue.
Sascha