Linked by Thom Holwerda on Mon 29th Oct 2007 20:27 UTC
Mac OS X "While the Apple hype machine and its fanatical followers would have you believe that Mac OS X 10.5 'Leopard' is a major upgrade to the company's venerable operating system, nothing could be further from the truth. Instead, Leopard is yet another evolutionary upgrade in a long line of evolutionary OS X upgrades, all of which date back to the original OS X release in 2001. But let me get one huge misunderstanding out of the way immediately: That's not a dig at Leopard at all. Indeed, if anything, Apple is in an enviable position: OS X is so solid, so secure, and so functionally excellent that it must be getting difficult figuring out how to massage another USD 129 out even the most ardent fans. Folks, Leopard is good stuff. But then that's been true of Mac OS X for quite a while now." Additionally, Apple acknowledges installation problems caused by Unsanity's APE, while others are complaining about problems with Java, or visual oddities. Additionally, there are hacks that restore the black dock triangles, opacify the menubar, and to enable Time Machine on Airport disks. Update: It appears the Leopard firewall has a dent in its armour.
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Just as an update on the Java2D situation, it turns out there is a workaround for this that a few people have pointed out to me. For those of you who are experiencing slow performance problems with Java in Leopard, you can issue the following parameter to to Java when you start it:

On Java 5 in Tiger, the default rendering pipeline was Quartz. For some reason, however, Apple decided to switch the default rendering pipeline to the standard Java one on Leopard. The standard Java one is not accelerated, and thus the slow performance.

Why Apple decided to change the default pipeline is beyond me. On most other platforms, Java uses the OpenGL pipeline by default. And until now, it used the Quartz pipeline on Apple. But none of the other platforms were still using the plain old unaccelerated Java pipeline anymore.

You can read more about the Quartz pipeline switch here:

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