The following Kb has been recently published and a hotfix is available. See http://support.microsoft.com/kb/951526
Consider the following scenario:
•You import a management pack to monitor certain network devices in a Microsoft System Center Operations Manager 2007 Service Pack 1 environment.
•You perform a network device discovery by using Simple Network Management Protocol (SNMP).
In this scenario, you may receive one or both of the following error messages: Error message 1
Health service host process has stopped working
Error message 2
Health service Host process encountered a problem and need to close
In this scenario, the OpsMgr Health Service is still running correctly. However, the Root Management Server (RMS) becomes unhealthy or unusable. Additionally, the following event is logged in the Operations Manager log on the server on which you perform the network device discovery:
Event Type: Error Event Source: HealthService Event Category: Health Service Event ID: 4000 Date: Date Time: Time User: N/A Computer: ComputerName Description: A monitoring host is unresponsive or has crashed. The status code for the host failure was 2164195371. Problem signature: Problem Event Name: APPCRASH Application Name: MonitoringHost.exe Application Version: 6.0.6278.0 Application Timestamp: 47b71437 Fault Module Name: HealthServiceRuntime.dll Fault Module Version: 6.0.6278.0 Fault Module Timestamp: 47b71433 Exception Code: c0000005 Exception Offset: 00003d9d OS Version: 6.0.6001.2.1.0.16.7 Locale ID: 1033
A defect in the SNMP networking module causes the HealthService service to become unstable or to crash. Therefore, the Root Management Server becomes unstable or unusable.
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