Importing Site

hi,

I am trying to import my site to another location.Export Command completed successfully.While trying to import i  am getting the following error.

stsadm -o import -url http://abc -filename backupi
nteractTopLevel.dat -includeusersecurity -haltonwarning -updateversions 1

Start Time: 3/9/2009 4:34:58 PM.
Progress: Initializing Import.
Progress: Importing User
Progress: Importing User
Progress: Importing User
Progress: Importing User
......
........

Progress: Importing Group member 51.
Progress: Importing Group member 52.
Progress: Importing Group member 53.
Progress: Importing Group member 54.
Progress: Importing Group member 55.
Progress: Importing Group member 57.
Progress: Importing Group member 58.
Progress: Starting content import.
Progress: De-Serializing Objects to Database.
Warning: User or group 5 cannot be resolved.
FatalError: User or group 5 cannot be resolved.
   at Microsoft.SharePoint.Deployment.DeploymentLogger.Log(DeploymentLogSeverity
 severity, SPDeploymentObject deplObject, String message, Boolean throwException
)
   at Microsoft.SharePoint.Deployment.DeploymentLogger.Log(DeploymentLogSeverity
 severity, String message)
   at Microsoft.SharePoint.Deployment.ImportObjectManager.ConvertToDestUserId(In
t32 userid, Boolean bAllowFallback, Boolean& bIsGroup)
   at Microsoft.SharePoint.Deployment.WebSerializer.DealWithGroupsOnImport(Impor
tObjectManager objectManager, DictionaryEntry property)
   at Microsoft.SharePoint.Deployment.WebSerializer.SetObjectData(Object obj, Se
rializationInfo info, StreamingContext context, ISurrogateSelector selector)
   at Microsoft.SharePoint.Deployment.XmlFormatter.ParseObject(Type objectType,
Boolean isChildObject)
   at Microsoft.SharePoint.Deployment.XmlFormatter.DeserializeObject(Type object
Type, Boolean isChildObject, DeploymentObject envelope)
   at Microsoft.SharePoint.Deployment.XmlFormatter.Deserialize(Stream serializat
ionStream)
   at Microsoft.SharePoint.Deployment.ObjectSerializer.Deserialize(Stream serial
izationStream)
   at Microsoft.SharePoint.Deployment.ImportObjectManager.ProcessObject(XmlReade
r xmlReader)
   at Microsoft.SharePoint.Deployment.SPImport.DeserializeObjects()
   at Microsoft.SharePoint.Deployment.SPImport.Run()
Progress: Import Completed.
Finish Time: 3/9/2009 4:39:30 PM.
Completed with 1 warnings.
Completed with 1 errors.

User or group 5 cannot be resolved.


Any Help for this.

Thanks,
raji