Why do I hear an noise when I alt+tab away from Firefox?

Why do I hear an noise when I alt+tab away from Firefox? I'm using a few 'normal' Firefox Addins but I am using Vimperator which to me seems like the most likely suspect.
Asked by: Guest \| Views: 456

Total answers/comments: 1

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Guest [Entry]

"If it is the Vimperator beep, you can try disabling it by putting the following file in your .vimperatorrc file:

javascript liberator.beep = function () { return false; }"