Hi,I am getting windows beep sound whenever I use alt+<shortcut> in opera (has been happening for quite a while). I had tried to disable opera notification sound but it doesn't help. This doesn't produce any sound if the command are menu related (example alt+f).

One of the example is alt+p (preferences)

Anyway to disable such sound? (except change in windows)

Currently using windows 7 and opera 12.15(32-bit)