Dialup Admin

I was wondering if you can point me in the right direction for a couple of issues that I'm having - When I view a session of a user, it says user "bla" has 0 open session, which it weird because the user is connected. Where does radius get this info from? Is there anything that I need to change to fix it? - Is radkill still used? Is there anywhere I can obtain this from, the ftp link in the wiki times out after a while