Question : EVENT ID 1030 & 1090 USERENV

have three w2k3 server in a 2000 native domain. Since yesterday I started recieveing the following errors in my event logs
Error 1:Event Type:     Error
Event Source:     Userenv
Event Category:     None
Event ID:     1030
Date:          7/7/2004
Time:          3:23:18 PM
User:          NT AUTHORITY\SYSTEM
Computer:     Servername
Description:
Windows cannot query for the list of Group Policy objects. Check the event log for possible messages previously logged by the policy engine that describes the reason for this.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

Error 2:Event Type:     Error
Event Source:     Userenv
Event Category:     None
Event ID:     1097
Date:          7/7/2004
Time:          3:23:18 PM
User:          NT AUTHORITY\SYSTEM
Computer:     servername
Description:
Windows cannot find the machine account, The Local Security Authority cannot be contacted


¿Where is the problem????, is very important . A lot of thanks.

Answer : EVENT ID 1030 & 1090 USERENV

On which machines do you receive these errors? Are they DCs or member server? Are your DNS settings OK? On your DC/DNS, and on all of your domain members, make sure the DC's address *only* is listed in the TCP/IP properties (be that via DHCP or static; do NOT use 127.0.0.1 on the DNS itself!). That makes sure your internal lookups work correctly. If you have more than one DC, make sure the primary DNS on your first DC points to itself, secondary empty, on the other DCs (assuming they're running DNS), set the primary DNS to the "first" DC, secondary to itself.
For internet access, delete the root zone (if present; it's the single dot: ".") on your DNS in your forward lookup zones. Then open the properties page of your DNS server and configure forwarders to point to your ISP's DNS. The forwarders section is the *only* entry in your network where your ISP's DNS should be listed.

Frequently Asked Questions About Windows 2000 DNS and Windows Server 2003 DNS
http://support.microsoft.com/?kbid=291382

Best practices for DNS client settings in Windows 2000 Server and in Windows Server 2003
http://support.microsoft.com/?kbid=825036