Question : DC keeps rebooting- 2003 server!

Hi my Primary DC server keeps rebooting and I get the error that lsass.exe is rebooting the machine? help! I look in the event logs and I see that it has this error

The process winlogon.exe has initiated the restart of computer Server on behalf of user  for the following reason: No title for this reason could be found
 Reason Code: 0x50006
 Shutdown Type: restart
 Comment: The system process 'C:\WINDOWS\system32\lsass.exe' terminated unexpectedly with status code -1073741819.  The system will now shut down and restart.

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

This is the event log right before the restart but it might be because of the restart and not the cause.

Event Type:      Warning
Event Source:      W32Time
Event Category:      None
Event ID:      22
Date:            5/18/2010
Time:            10:24:06 AM
User:            N/A
Computer:      IEPSZW001
Description:
The time provider NtpServer encountered an error while digitally signing the  NTP response for peer 165.184.54.168:123.  NtpServer cannot provide secure (signed) time to the client and will ignore the request. The error was: The RPC server is unavailable. (0x800706BA)

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


Thanks for any help I can get. Also I ran a full Norton Antivirus scan and found nothing.

Attachments:

untitled.bmp (1.2 MB) (File Type Details) 

error

Answer : DC keeps rebooting- 2003 server!

Try installing below hotfix,if it applies & also try to uninstall symantec which might be corrupt.

http://support.microsoft.com/kb/952145