--- a/dbapi.py	Thu Mar 13 17:01:13 2014 +0100
+++ b/dbapi.py	Wed Mar 05 16:58:14 2014 +0100
@@ -245,7 +245,6 @@
         self.cnx = cnx
         self.data = {}
         self.login = login
-        self.mtime = time()
         # dbapi session identifier is the same as the first connection
         # identifier, but may later differ in case of auto-reconnection as done
         # by the web authentication manager (in cw.web.views.authentication)