On a Windows Vista-based or Windows 7-based client computer, the following event may be logged in the Application log:
Log Name: Application Source: Microsoft-Windows-User Profiles Service Date: Date Event ID: 1530 Task Category: None Level: Warning Keywords: Classic User: SYSTEM Computer: ComputerName
Description: Windows detected your registry file is still in use by other applications or services. The file will be unloaded now. The applications or services that hold your registry file may not function properly afterwards.
DETAIL - 1 user registry handles leaked from \Registry\User\S-1-5-21-3112862306-1016156048-4130204762-1000: Process 932 (\Device\HarddiskVolume1\Windows\System32\svchost.exe) has opened key \REGISTRY\USER\S-1-5-21-3112862306-1016156048-4130204762-1000
This behavior occurs because Windows automatically closes any registry handle to a user profile that is left open by an application. Windows Vista does this when Windows Vista tries to close a user profile.
Note Event ID 1530 is logged as a Warning event. The application that is listed in the event detail is leaving the registry handle open and should be investigated.