Error en el Visor de Sucesos 6482 Servidos MOSS

Que tal amigos, alguien de ustedes me podra orientar sobre este error
que me aparece en el visrtod e sucesos de mi servidor MOSS, aparece
uno cada minuto. estuve buscando algo de informacion en internet, pero
no logro encontrar algo que me ayude a solucionarlo.

Mucho les agradecere, sus aportaciones.

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No se pudo ejecutar el trabajo de administración del servidor de
aplicaciones para la instancia de servicio
Microsoft.Office.Server.Search.Administration.SearchServiceInstance
(fcae28e7-ec1c-4250-93dc-c6cded1ad49d).

Motivo: Access to the path 'C:\WINDOWS\system32\drivers\etc\HOSTS' is
denied.

Detalles de soporte técnico:
System.UnauthorizedAccessException: Access to the path 'C:\WINDOWS
\system32\drivers\etc\HOSTS' is denied.
at System.IO.__Error.WinIOError(Int32 errorCode, String
maybeFullPath)
at System.IO.FileStream.Init(String path, FileMode mode, FileAccess
access, Int32 rights, Boolean useRights, FileShare share, Int32
bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String
msgPath, Boolean bFromProxy)
at System.IO.FileStream..ctor(String path, FileMode mode,
FileAccess access, FileShare share, Int32 bufferSize, FileOptions
options, String msgPath, Boolean bFromProxy)
at System.IO.FileStream..ctor(String path, FileMode mode,
FileAccess access, FileShare share, Int32 bufferSize, FileOptions
options)
at System.IO.StreamWriter..ctor(String path, Boolean append,
Encoding encoding, Int32 bufferSize)
at System.IO.StreamWriter..ctor(String path, Boolean append)
at System.IO.FileInfo.CreateText()
at
Microsoft.Search.Administration.Security.HOSTSFile.CleanupDedicatedGathering
(Hashtable HOSTSFileMappings, StringBuilder HOSTSComments, IEnumerable
obsoleteHosts, String dedicatedName, Boolean isDirty)
at
Microsoft.Search.Administration.Security.HOSTSFile.ConfigureDedicatedGathering
(SearchServiceInstance searchServiceInstance, SPServer
dedicatedWebFrontEndServer, IList`1 previousWebApplicationHostNames)
at
Microsoft.Office.Server.Search.Administration.SearchServiceInstance.SynchronizeDefaultContentSource
(IDictionary applications)
at
Microsoft.Office.Server.Search.Administration.SearchServiceInstance.Synchronize
()
at
Microsoft.Office.Server.Administration.ApplicationServerJob.ProvisionLocalSharedServiceInstances
(Boolean isAdministrationServiceJob)