Hi Massimo, This problem exists for quite some time, today I trace it to these old source.
[1] The diagnosis. http://groups.google.com/group/web2py/browse_thread/thread/bb9f92e255323a94 [2] The fix. http://groups.google.com/group/web2py/browse_thread/thread/b9ad5c501df50be6 Would you please take the above fix? Thanks. Regards, Ray (a.k.a. Iceberg)