I have read the manual for adding Avatar support in a Custom setup.

I did not changed ag.php because the field name is correct.

//Avatar
	$avatar_field_name = 'avatar';

public function avatar_url($avatar) {
        //$murl = str_replace("server/freichat.php", "", $this->url);
        //$avatar_url = $murl . 'client/jquery/user.jpeg';
        $murl = "http://www.mysite.nl/img/avatars/";

        $avatar_url = $murl . $avatar;
        return $avatar_url;
    }

did you enable avatar from the backend?
if yes, then check to see if a broken image(404) is being generated.

1. avatar in backend is anabled
2. there is no broken image error.

Is it showing the default random avatars ,or something else ?

And have you edited the query as given in the documentation .
Because there is a possibility that , the query is not fetching the avatar
So it is being passed as empty and freichat switches to default avatars .

Yes, i changed it like this for USER configuration:

public function get_users() {

        $query = "SELECT DISTINCT status_mesg,username,session_id,status,guest,X.avatar
                   FROM frei_session, portaal_users AS X
                  WHERE time>" . $this->online_time2 . "
                   AND session_id!=" . $_SESSION[$this->uid . 'usr_ses_id'] . "
                   AND guest=0
                   AND status!=2
                   AND status!=0
                   AND X.id= " . $_SESSION[$this->uid . 'usr_ses_id'] . "";                  

        $list = $this->db->query($query)->fetchAll();
        return $list;
    }

Enable PHP debug in backend

Then before the statement return $list in that function
Add

foreach($list as $list_item)
$this->freichat_debug($list_item);

console reports no errors (FreiChatX script initiated (17))
the error log report error ARRAY when i add your lines.

in backend: debugging is ON

all the icons are still the same :(

Replace

foreach($list as $list_item)
$this->freichat_debug($list_item);

$this->freichat_debug($query);

SELECT DISTINCT status_mesg,username,session_id,status,guest,X.avatar
FROM frei_session, portaal_users AS X
WHERE time>1332522786
AND session_id!=6318
AND guest=0
AND status!=2
AND status!=0
AND X.id= 6318

All the avatars are the same in the list.
This also happens when i take another X.id

I asked you to run the query in phpmyadmin , if you have done that please post
the output.

status_mesg username session_id status guest avatar
Beschikbaar Gea 3732 1 0 hf9840984h49u.jpg
Beschikbaar Michel 6042 1 0 hf9840984h49u.jpg
Beschikbaar Joop 80 1 0 hf9840984h49u.jpg
Beschikbaar Simon 2272 1 0 hf9840984h49u.jpg

kick..

The query is correct .

And what do you mean by , you get all same avatars ?
It would be nice if you could provide me with a screenshot of the chatbox ,
which will help me to know what is the exact problem .

Replied in mail .

i replied in mail to :)