=== modified file 'storm/sqlobject.py'
--- storm/sqlobject.py	2008-06-25 06:10:10 +0000
+++ storm/sqlobject.py	2008-07-08 09:06:44 +0000
@@ -552,7 +552,9 @@
         return item in result_set
 
     def __nonzero__(self):
-        result_set = self._without_prejoins()._result_set
+        copied_result = self._copy(
+            prejoins=None, prejoinClauseTables=None, orderBy=None)
+        result_set = copied_result._result_set
         return result_set.any() is not None
 
     def count(self):

=== modified file 'tests/sqlobject.py'
--- tests/sqlobject.py	2008-06-25 04:49:30 +0000
+++ tests/sqlobject.py	2008-07-08 09:06:32 +0000
@@ -777,6 +777,11 @@
         result = self.Person.select(self.Person.q.name == "No Person")
         self.assertEquals(result.__nonzero__(), False)
 
+    def test_result_set__nonzero__ignores_orderBy_and_prejoins(self):
+        result = self.Person.select(
+            prejoins=['inexistent']).orderBy('ignored')
+        self.assertEquals(result.__nonzero__(), True)
+
     def test_result_set_distinct(self):
         result = self.Person.select("person.name = 'John Joe'",
                                     clauseTables=["phone"])