cannot start Windows SharePoint Services Search

El sitema operativo es Windows Server 2003 R2 x64 entreprise service pack 2

los errores son

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Event Type: Error
Event Source: Office SharePoint Server
Event Category: Office Server Shared Services
Event ID: 6482
Date: 4/2/2008
Time: 8:56:41 AM
User: N/A
Computer: IT-205
Description:
Application Server Administration job failed for service instance
Microsoft.Office.Server.Search.Administration.SearchServiceInstance
(a96bc157-abe4-43b7-83ba-2584b49f5a3c).

Reason: Object reference not set to an instance of an object.

Techinal Support Details:
System.NullReferenceException: Object reference not set to an instance of an
object.
at
Microsoft.Office.Server.Search.Administration.SearchServiceInstance.InstallGathererApplicationIf()
at
Microsoft.Office.Server.Search.Administration.SearchServiceInstance.Synchronize()
at
Microsoft.Office.Server.Administration.ApplicationServerJob.ProvisionLocalSharedServiceInstances(Boolean isAdministrationServiceJob)

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

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Event Type: Error
Event Source: Office SharePoint Server
Event Category: Office Server Shared Services
Event ID: 6483
Date: 4/2/2008
Time: 8:56:37 AM
User: N/A
Computer: IT-205
Description:
Application synchronization failed for
Microsoft.Office.Server.Search.Administration.SearchService.

Reason: Object reference not set to an instance of an object.

Techinal Support Details:
System.NullReferenceException: Object reference not set to an instance of an
object.
at
Microsoft.Office.Server.Search.Administration.Deployment.BringUpgradedSearchDbOnlineIf(SharedDatabase searchDatabase)
at
Microsoft.Office.Server.Search.Administration.SearchSharedApplication.SynchronizeDatabase()
at
Microsoft.Office.Server.Search.Administration.SearchSharedApplication.Synchronize()
at
Microsoft.Office.Server.Administration.SharedResourceProvider.SynchronizeApplications(SharedComponentSecurity sharedApplicationSecurity)

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

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Event Type: Error
Event Source: Windows SharePoint Services 3
Event Category: Timer
Event ID: 6398
Date: 4/2/2008
Time: 8:55:39 AM
User: N/A
Computer: IT-205
Description:
The Execute method of job definition
Microsoft.Office.Server.Administration.ApplicationServerAdministrationServiceJob
(ID 303b3b1c-3a88-4ab5-9791-33bf55de86c5) threw an exception. More
information is included below.

Attempted to read or write protected memory. This is often an indication
that other memory is corrupt.

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

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