title: Azure WadLogsTable contains duplicate entries
body: <p>I have a web role (2 instances) and a worker role (2 instances) both roles use the following configuration</p>
  
  <pre><code>        DiagnosticMonitorTraceListener tmpListener = new DiagnosticMonitorTraceListener();
          System.Diagnostics.Trace.Listeners.Add(tmpListener);
          string wadConnectionString = "Microsoft.WindowsAzure.Plugins.Diagnostics.ConnectionString";
          CloudStorageAccount storageAccount =
          CloudStorageAccount.Parse(RoleEnvironment.GetConfigurationSettingValue(wadConnectionString));
  
          RoleInstanceDiagnosticManager roleInstanceDiagnosticManager =
          storageAccount.CreateRoleInstanceDiagnosticManager(RoleEnvironment.DeploymentId,
          RoleEnvironment.CurrentRoleInstance.Role.Name, RoleEnvironment.CurrentRoleInstance.Id);
  
          DiagnosticMonitorConfiguration config = roleInstanceDiagnosticManager.GetCurrentConfiguration();
          config.Logs.BufferQuotaInMB = 500;
          config.Logs.ScheduledTransferPeriod = TimeSpan.FromMinutes(1D);
          config.Logs.ScheduledTransferLogLevelFilter = LogLevel.Information;
  
          roleInstanceDiagnosticManager.SetCurrentConfiguration(config);
  </code></pre>
  
  <p>When I add some messages I notice that the worker role logs the same entry twice. Do I have to change something?</p>