title: Sporadic Arg_COMException in Silverlight when loading data from RIA service
body: <p>Users sometimes get strange exception while working with application. I could not ever reproduce it. It happens when executing one particular domain service query. This query gets executed quite often (each time user saves changes).</p>
  
  <p>Query does not have parameters. There is simple filtering: Context.GetEventsQuery().Where(lce => lce.Id > maxId)</p>
  
  <p>Domain service method is simple:
        public IQueryable GetEvents()
        {
           return ObjectContext.Events;
        }</p>
  
  <p>After it happens first time, it keeps happening every time (until user refreshes the webpage).</p>
  
  <p>Here is exception text from logs:
  Load operation failed for query 'GetEvents'. 
  System.ServiceModel.DomainServices.Client.DomainOperationException: Load operation failed for query 'GetEvents'. ---> System.Exception ---> System.Exception: [Arg_COMException]
  Arguments: 
  Debugging resource strings are unavailable. Often the key and arguments provide sufficient information to diagnose the problem. See <a href="http://go.microsoft.com/fwlink/?linkid=106663&amp;Version=4.0.50917.0&amp;File=mscorlib.dll&amp;Key=Arg_COMException" rel="noreferrer">http://go.microsoft.com/fwlink/?linkid=106663&amp;Version=4.0.50917.0&amp;File=mscorlib.dll&amp;Key=Arg_COMException</a>
   at System.Net.Browser.BrowserHttpWebRequest.InternalEndGetResponse(IAsyncResult asyncResult)
   at System.Net.Browser.BrowserHttpWebRequest.&lt;>c__DisplayClass5.b__4(Object sendState)
   at System.Net.Browser.AsyncHelper.&lt;>c__DisplayClass2.b__0(Object sendState)
   --- End of inner exception stack trace ---
   at System.ServiceModel.DomainServices.Client.WebDomainClient`1.EndQueryCore(IAsyncResult asyncResult)
   at System.ServiceModel.DomainServices.Client.DomainClient.EndQuery(IAsyncResult asyncResult)
   at System.ServiceModel.DomainServices.Client.DomainContext.CompleteLoad(IAsyncResult asyncResult)
   --- End of inner exception stack trace ---
   at System.ServiceModel.DomainServices.Client.OperationBase.Complete(Exception error)
   at System.ServiceModel.DomainServices.Client.LoadOperation.Complete(Exception error)
   at System.ServiceModel.DomainServices.Client.DomainContext.CompleteLoad(IAsyncResult asyncResult)
   at System.ServiceModel.DomainServices.Client.DomainContext.&lt;>c__DisplayClass1b.b__17(Object )</p>
  
  <p>What can be the reason?</p>