Since you say you work for an R&D company then you should also know that the best way to submit a bug is with easy to reproduce steps, including anything you tried to resolve it. Otherwise the developer will come back and say that they can't reproduce it and it gets marked as Not a Bug or the equivalent at that company. You should also make sure you submit these to the Apple site. Personally, I can't reproduce it. Does it still happen after a restart? Could it be something with your speakers and actually a hardware problem?
Also, If you work for an R&D company, I sure you take every single little detail you have to the owner/CEO of the company. Right?
Cause thats what you said you did in the "Bug" thread you posted the other day. "I am posting this so Scott Forstall will see it and I've already emailed Steve Jobs". Do you go to the CEO when the copier breaks?