Disable/deactivate system beep in OpenSolaris (in console and other apps)

Setting the values of KBD_BEEPER_FREQ and CONSOLE_BEEPER_FREQ to 0 in /etc/default/kbd and a subsequent reboot did not solved the problem for me. But executing

xset b off

as normal user worked well. To deactivate the audible bell permanently, you have to

# pkg install SUNWgnome-config-editor
$ gconf-editor

...and go to  /apps/metacity/general/, where you have to uncheck the audible_bell property.