Just an FYI, this doesn't help at all. Genius bar re-installed the entire OS on mine and the problem still persisted. Grabbed a new laptop altogether, same problem. Seems likely there are more susceptible laptop speakers / chips and the software intending to prevent the issue only works on the less susceptible ones. At some point, Apple with either have to offer a hardware fix (when they are forced to through a lawsuit or enough bad press) or they'll find a software workaround at some point.
arimus
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