RE: Few users can't login with any kind of client Tom Bolton 19.Jan.13 05:54 AM a Web browser Administration 8.5.2 IFR1Windows
Thank you Carl for your answer.
I have resolved my problem just after I have written my question.
Problem was indeed with Sametime ServerName field on users document. That field is a Names field and I have put Simple text value there, so in UI all was right but when I have checked the field value from ytria I realised that there was the wrong value.