Freeradius disconect issue using gui

[dj_seijin]

Hi all, i have an issue disconecting freeradius user using status->captive portal , the user is deleted of firewall but not of the freeradius online user, you can view using radwho command.
Here are an example.

1. The user "test" login succesfully and this is the "start" accounting message:
Sat Oct  8 08:41:20 2011
        NAS-IP-Address = 190.X.X.X
        NAS-Identifier = "firewall01.localdomain"
        User-Name = "test"
        Acct-Status-Type = Start
        Acct-Authentic = RADIUS
        Service-Type = Login-User
        NAS-Port-Type = Ethernet
        NAS-Port = 10
        Acct-Session-Id = "7fdfeb5709d66d4a"
        Framed-IP-Address = 192.168.1.103
        Called-Station-Id = "deleted by me"
        Calling-Station-Id = "00:26:b6:00:00:00"
        Client-IP-Address = 190.X.X.X
        Acct-Unique-Session-Id = "a4a5911c36753cab"
        Timestamp = 1318081280

Pls look the Acct-Session-Id in bold

But in the radwho command show this:
User-Name = "test"
Acct-Session-Id = "09d66d4a"
NAS-IP-Address = 190.X.X.X
NAS-Port = 10
Service-type = Login-User
Framed-IP-Address = 192.168.1.103
Acct-Session-Time = 642
Calling-Station-Id = "00:06:b6:00:00"

2.  I have to send the radzap command via cli for the user have to be disconected., Because using the gui is not working, and this is because using gui not have sending the correct Acct-Session-Id..

Example:
#radzap -u test $NAS-IP-Address $share-secret

Sorry for my bad english…