User Profile Application: SynchronizeMIIS encounters an exception

Hi,

i have 2 app and 2 web server. UPSS was running on APP 1 and now its get stuck on starting, when i try to restart and check log it show following error.

kindly guide what is issue and how to fix it.

User Profile Application: SynchronizeMIIS encounters an exception: Microsoft.SharePoint.Administration.SPDuplicateObjectException: An object of the type
Microsoft.Office.Server.Administration.ProfileSynchronizationSetupJob named "ProfileSynchronizationSetupJob" already exists under the parent Microsoft.SharePoint.Administration.SPTimerService named "SPTimerV4".  Rename your object or delete the existing object.     at Microsoft.SharePoint.Administration.SPConfigurationDatabase.StoreObject(SPPersistedObject obj, Boolean storeClassIfNecessary, Boolean ensure)     at Microsoft.SharePoint.Administration.SPConfigurationDatabase.Microsoft.SharePoint.Administration.ISPPersistedStoreProvider.PutObject(SPPersistedObject persistedObject, Boolean ensure)     at Microsoft.SharePoint.Administration.SPP...    8b1be1c4-0a2e-438b-8c29-7444392c09b8


03/18/2013 15:10:00.18*    OWSTIMER.EXE (0x2038)                       0x0F14    SharePoint Portal Server         User Profiles                     b3w8    High        ...ersistedObject.BaseUpdate()     at Microsoft.SharePoint.Administration.SPJobDefinition.Update()     at Microsoft.Office.Server.Administration.UserProfileApplication.StartSynchronizationServiceSetupTimer(String strSyncMachineAddress)     at Microsoft.Office.Server.Administration.UserProfileApplication.SynchronizeMIIS()     at Microsoft.Office.Server.Administration.ILMProfileSynchronizationJob.Execute()    8b1be1c4-0a2e-438b-8c29-7444392c09b8


03/18/2013 15:10:00.18     OWSTIMER.EXE (0x2038)                       0x2080    SharePoint Foundation            Monitoring                        nasq    Medium      Entering monitored scope (Timer Job job-diagnostics-uls-provider)    2dd96e71-bbea-498c-9d6f-eb59f5c32ecd

03/18/2013 15:10:00.20     OWSTIMER.EXE (0x2038)                       0x0F14    SharePoint Foundation            Monitoring                        b4ly    Medium      Leaving Monitored Scope (Timer Job User Profile Service_ProfileSynchronizationJob). Execution Time=21.2885    8b1be1c4-0a2e-438b-8c29-7444392c09b8


thx

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iffi