I had to use GNOME today on a random computer. gnome-terminal was beeping all the time. I say no problem, I know how to disable this:

xset b off

It did not work... Hum. I go in the right menu and see a checkbox "Terminal bell". I click on it. All I got is all my terminal windows going away and:

gnome-terminal3557: segfault at 4 ip 0806f417 sp bf9fd000 error 4 in gnome-terminal8048000+3a000

No kidding. You don't want to use X standard ways and prefers to crash at my face. Fuck you.