Very Strange Fluent / WCF problem.

Question

This is a strange phenomena, and I hope someone can take this one...

I have this class:

Class Parent
{
  some members;
  IList<Child> mylist;
}

Class Child : Parent
{
}

They are map with HasMany in Fluent.

now I'm calling the List function over wcf

and unless I remove the HasMany mapping from the father, The WCF List Function (that do this inside:

   public IMyID[] List(string typeName)
    {
      IMyID[] result = null;
      try
      {            

        using (ISession session = SessionFactoryProvider.NewSession)
        {
          Type relevantType = Type.GetType(typeName);
          ICriteria crit = session.CreateCriteria(relevantType);

          IList<IMyID> queryResult = crit.List<IMyID>();

          if (queryResult != null)
          {

            result = queryResult.ToArray();

          }

        }
      }
      catch (Exception ex)
      {

      }

        return result;

So - As Long as the Parent has the HasMany Mapping - This function goes TWICE (although only one WCF call is invoked, and I've checked that also in the trace) and the WCF channel breaks.

If I remove the "HasMany" mapping, everything is working.

If I comment this line: IList queryResult = crit.List();

it will run only once... (returning null...)

Any Ideas what makes this function run twice, and break the WCF Channel ?

Thanks, Einat.