After logon logoff occurs!!??

[Ondrej Hanak]

I have this strange problem during log-on. 
It seems that logon is o.k. (login dialog dissapears) and profile on 
NT box is exactly same as on samba server.
After few seconds logoff occurs. And profil on samaba server has new date.
I have two kinds of NT boxes, US and CZ. On US NT boxes is everything 
o.k., this problem appears only on Czech NT boxes. Can be this due some 
software packages on CZ version?
Does anybody know how to fix this?   
						Thanx O.H.