EAP session didn't finish

[Kiril]

for some strange reason the topic
http://freeradius.1045715.n5.nabble.com/EAP-session-didn-t-finish-td5723981.html
is not continued

>
>> ssl certs are generated during freeradius install, so the problem
>> can't be in ssl
>> who can tell in which case this message is shown?
>
> Ensure the CA for the server cert is trusted on the client.

thx, but it is already trusted
we have successful auths, too
but sometimes it fails

performing some other tests we can see that sometimes the AP is
sending dissociating frame during the handshake between the device(pc,
laptop, mobile, etc) and the AP. so the conversation fails