Am I responsible for cleaning up after a Task created with the TaskCreationOptions.LongRunning flag?
var task = Task.Factory.StartNew(() => {...}, TaskCreationOptions.LongRunning);

task.ContinueWith(x => task.Dispose());

var task = Task.Factory.StartNew(() => {...}, TaskCreationOptions.LongRunning)
               .ContinueWith(x =>
   if(x.IsFaulted)
   {
      x.Exception.Handle(_ => true); //just an example, you'll want to handle properly
   }
   else if(x.IsCompleted)
   {
       //do something with the result, if necessary
       x.Dispose());
   });