Log Name: SystemSource: Service Control ManagerDate: 11/11/2009 7:36:34 PMEvent ID: 7023Task Category: NoneLevel: ErrorKeywords: ClassicUser: N/AComputer: Mack-PCDescription:The Peer Name Resolution Protocol service terminated with the following error: %%-2140993535Event Xml:<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> <System> <Provider Name="Service Control Manager" Guid="{555908d1-a6d7-4695-8e1e-26931d2012f4}" EventSourceName="Service Control Manager" /> <EventID Qualifiers="49152">7023</EventID> <Version>0</Version> <Level>2</Level> <Task>0</Task> <Opcode>0</Opcode> <Keywords>0x8080000000000000</Keywords> <TimeCreated SystemTime="2009-11-12T03:36:34.537808800Z" /> <EventRecordID>3714</EventRecordID> <Correlation /> <Execution ProcessID="564" ThreadID="656" /> <Channel>System</Channel> <Computer>Mack-PC</Computer> <Security /> </System> <EventData> <Data Name="param1">Peer Name Resolution Protocol</Data> <Data Name="param2">%%-2140993535</Data> </EventData></Event>

Did you receive BSOD when issue occurs? If so, the issue should be related to the anti-virus program, or the network adapter driver. Please upgrade the network adapter driver. If the issue still occurs, temporary uninstall the anti-virus and monitor the issue.Arthur Xie - MSFT