Tema: Posible cambio del Startup Chime
http://www.appleinsider.com/article.php?id=1410 dejo el link...
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iMac 500 Mhz PowerPC G3, 576 MB RAM, 40 GB, OS 10.3.9
iMac 2.66 GHz Intel Core 2 Duo, 2 GB RAM, 320 GB, OS 10.6.3
MacBook Pro 2.53 GHz Intel Core 2 Duo, 4 GB RAM, 250 GB, OS 10.6.3