10.2.3, 10.2.3 is out with audio improvements Options

[ryosode]

Here's an excerpt from 10.2.3 release document. This may be a good news some peple here...

http://docs.info.apple.com/article.html?artnum=107263

...
Audio Enhancements

* Addresses a potential issue in which sound from some USB audio devices may "stutter" after waking from sleep.
* Addresses an issue in which iSub, when used with some third-party USB speakers, could produce static.
* Improves default reverb setting for applications which use QuickTime Musical Instruments.
* Addresses an issue in which audio recorded from a USB device with a sample rate of 48k or 96k may include distortion.
* Improves results when recording from a USB microphone with a sample rate of 11.025k or 22.050k.
* Addresses an issue in which a MIDI device may unexpectedly fail to be recognized, when several devices are connected.
* Refines MIDI device support by removing compatibility for MIDI devices that are connected via a serial port (which Apple has not shipped with machines for several years).

[BusError]

Look at the name "AppleMIDISerialDriver.kext" Means it was made for apple serial drivers. And there aren't many of those left.

The problem that this driver causes is that even if it MIGHT work on a third party serial card/adapter, apple cannot affort to guarantee it, so instead of letting it be used that way *and carry the blame if it doesn't work* they decided to pull it.

IF a third party vendor wants to make a MIDI plugin for their serial adapters, NOTHING stops them, it's in fact fairly easy to do; and since it will be tailor made for their card, theres no problem of compatibility.