“Apple, having allowed this shipment to slip six months already, has had to get Leopard out the door before the end of October by hook or by crook. You may reasonably conclude that this cake is probably not entirely baked. As with Tiger, an early software update (10.5.1) will likely be needed to correct a multitude of issues. Until then, consider yourself a beta tester.” — Maxfixit

More here: http://www.macfixit.com/article.php?story=20071026082852658