Crackling noise after OS X update

hi,
I have external speakers plugged into my MBP, and after the update, after a sound had been played, like a system alert or something, after a few seconds there was a crackling noise. It is as though the soundcard is turning off to save power, as it also happens when i am running on battery mode (i know this because i ran from battery power while i was running 10.4.9).
Does anybody else have the same problem or know what the problem may be?
Thanks

Does anybody else have the same problem or know what the problem may be?
I do have the same problem. It's good to know that I'm not alone. My MBP's sound card was defective from origin and it was replaced under the warranty. Ever-since I'm a bit paranoiac that something similar could happen, you know, that the sound card getting damaged could be only the result of another internal device damaging it.
Anyway, I hear all those noises and I don't really like them but I could live with them if necessary till an additional update is released fixing this bug.
I have to say though, that I have always believed that the audio doesn't really increase properly. We all know that the sound, from none to full, increments 16 times... Well, according to me, when you are turning the audio up, it goes up very poorly till it reaches the 10 or 11 little square, then it really cranks up. Put it in a chart, the increment doesn't draw a straight diagonal line, but a curve, a parabolic line. And also, the sounds performs very differently in Windows. Much better I believe.
Is that not true?
MBP 15in 2.33GHz.   Mac OS X (10.4.10)   other 200+ posts with the old Discussion Forums (now lost)

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