diff --git a/VERSION b/VERSION
index 4ca64bf7..5420088d 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-Version 2.4.7-stable+timestamp.2013.05.27.11.49.44
+Version 2.4.7-stable+timestamp.2013.05.28.22.44.29
diff --git a/gluon/dal.py b/gluon/dal.py
index a6317982..a4264ca5 100644
--- a/gluon/dal.py
+++ b/gluon/dal.py
@@ -2522,8 +2522,6 @@ class MySQLAdapter(BaseAdapter):
         self.execute('select last_insert_id();')
         return int(self.cursor.fetchone()[0])
 
-    def integrity_error_class(self):
-        return self.cursor.IntegrityError
 
 class PostgreSQLAdapter(BaseAdapter):
     drivers = ('psycopg2','pg8000')