Hi all, I am having trouble disabling the facebook chat sound when I am chatting via the Firefox social API thingy. There is simply no option for me to disable the sound. Obviously, disabling the chat sound in the web console in facebook.com doesn't help at all. I'll appreciate if you have any quick fix (like deleting the sound file or changing it to a mute sound file if it's stored locally in my PC) or greasemonkey script or add-on that can help me on it. Thanks.
Start Firefox in Safe Mode to check if one of the extensions (Firefox/Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Firefox/Tools > Add-ons > Appearance).
Do NOT click the Reset button on the Safe Mode start window or otherwise make changes.