well english name is User Profile Service. and it can be found in Computer Managemet under services. Windows name is ProfSvc, that name is same for all languges.
This service is responsible for User Hive(registry) cleanup, all NT based windows suffer from this. Service was added to 2000, 2003, XP with a patch, service is native in Vista and Win7. Some users disable needed services by mistake and or services sometimes might stop working by themself (less likelly)