I am using .NET Framework v2.0 and using a singleton object.

I am using some thing like:

//
// Connect/reconnect by creating object at server and getting proxy
//
if(!commsOK)
{
    if(timeToRetryComms)
    {
        MyRemotingObject myRemotingObject = new MyRemotingObject();
        myRemotingObject = 
           (IMyRemotingObject) Activator.GetObject( 
typeof(IMyRemotingObject), url);
        commsOK = (myRemotingObject != null);
    } 
}

//
// If the object is still communicating use it - mark comms down if com fails
//
if(commsOK)
{
  try
  {
     myRemotingObject.DoOperation(a,b,c);
  }
  catch(WebException) 
  {
      commsOk = false;
  }
  catch(RemotingTimeoutException)
  {
     commsOk = false;
  }
  catch(Exception ex) // comms still assumed to be OK
  {
      TellUserWhatTheErrorIsSoHeCanFixIt(ex); // i.e. File I/O error at 
server 
                    // errors like (user gave wrong directory path or such)
  }
}