Linux computer lost trusted relationship

Hello,

Linux administrators use ADDS for user authentication and provide roaming profiles using samba. But for some reason computer broke trust with AD (or AD broke trust with PC). Linux administrator trying to explain the pattern:

On A computer

1.User logon and authenticate in AD
2.Try get profile, go to samba server
3.Samba using user credentials ask group membership 
4.AD give group membership
5.User sync his profile

If client try logon from other computer "B". Than AD begin not trust for "A" computer if user again come back on computer "A".

Possible for A computer answer DC01 and for B computer answer DC02.