Wheezy /Gnome3: how to torn OFF greeter sound (LOUD boink)?

[Joost Kraaijeveld <J.Kraaijeveld@Askesis.nl>]

Hi,

When I boot my computer and the greeter window appears, the one where
you can choose the user to login, a very loud and annoying sound (boink)
is played. How can I turn that completely off? I am using the current
Wheezy /Gnome3.

NB I found /etc/gdm3/greeter.settings that had a commented out entry
"event-sounds=false", but enabling that entry did not make any
difference. 

TIA



-- 
Met vriendelijke groeten,

Joost Kraaijeveld
Askesis B.V.
Molukkenstraat 14
6524NB Nijmegen
tel: 024-3888063 / 06-51855277
fax: 024-3608416
web: www.askesis.nl