What’s the problems with the following code

以下代码源自于真实项目，本人只是做了一点简化，大家来找碴，看看哪些地方不妥:-)

 public class PathedObject
    {
        public PathedObject(object obj)
        {
            Object = obj;
            ObjectPath = new object[0];
        }

        public PathedObject(object obj, object[] path)
        {
            System.Diagnostics.Debug.Assert(path != null);
            Object = obj;
            ObjectPath = path;
        }

        public object Object
        {
            get;
            set;
        }
        public object[] ObjectPath
        {
            get;
            internal set;
        }

        /// <summary>
        /// Rules:
        /// Supose Path 1 = A->B->D
        ///        Path 2 = A->C->D
        ///        Path 3 = D
        ///There are :
        ///        Path 1 == Path 3
        ///        Path 1 != Path 2
        /// </summary>
        /// <param name="obj"></param>
        /// <returns></returns>
        public override bool Equals(object obj)
        {
            PathedObject other = obj as PathedObject;
            if (other == null)
                return false;

            if (this.ObjectPath.Length > 0 && other.ObjectPath.Length > 0)
            {
                if (!this.Object.Equals(other.Object))
                    return false;

                for (int i = 0; i < ObjectPath.Length; i++)
                {
                    if (!ObjectPath[i].Equals(other.ObjectPath[i]))
                        return false;
                }
                return true;
            }
            else
                return this.Object.Equals(other.Object);

        }

        public override int GetHashCode()
        {
            int hashCode = Object.GetHashCode();

            if (ObjectPath != null && ObjectPath.Length > 0)
            {
                foreach (object path in ObjectPath)
                    hashCode = HashCodeUtil.MixCodes( hashCode, path.GetHashCode());
            }

            return hashCode;
        }
    }

    public class HashCodeUtil
    {
        public static int MixCodes(int code1, int code2)
        {
            int h = (code1 << 4) + code2;
            int g = h & unchecked((int)0xF0000000);
            if (g != 0)
                h ^= g >> 24;
            h &= ~g;
            return h;
        }
    }