Group Policy Errors

Good morning everybody,

I'm getting this errors on all of my 2003 Servers:

Eventid 1110
Attemp to determine whether user and machine accounts are in the same forest
failed (The Interface is unknown).

Eventid 1053
Windows cannot determine the user or computer name. (Access is denied.).
Group Policy processing aborted

Eventid 1010
Failed to set the user's home directory (Drive Z: connect to share
\\servers\shared).

Eventid 5602
An internal error occurred while accessing the computer's local or network
security database

I need your help in figuring out what the problem is and how to fix that.
Your help is so much appreciated

Hayman Ezzeldin