Getting timeout errors executing stored procedures with Entity Frameworks 4

Question

I've been testing the new features in .Net 4 and have run into a strange problem. I'm calling a stored procedure in SQL 2008 that returns a query so I've added a Function Import creating a new Complex Type (called sp_Result) of the result set. When I execute it the call to the stored procedure will work intermittently on the first pass, but then always times out on the second pass. The exception is a System.Data.SqlClient.SqlException Timeout expired message. The SP query is simple and executes in milliseconds normally so it seems like the call is never making it to the database. I'm at a loss, is there something additional that needs to be done when using stored procs?

   List<sp_Result> myList = new List<sp_Result>();
   using (MySQLDatabaseEntities entities = new MySQLDatabaseEntities())
  {
    var myQueryResult = (from c in entities.TABLE1
                     where c.CREATEDDATE == System.DateTime.Today
                     select new { c.FIELD1, c.FIELD2 }).Distinct();
    foreach (var item in myQueryResult)
    {
        foreach (sp_Result myResult in entities.StoredProc(item.FIELD1, item.FIELD2))
        {
          myList.Add(myResult);
        }
    }
 }