>>      I thought that OS X was mach kernel based, making it a lightweight
>> derivative of a BSD kernel, is that right?
>    not that I know of... I don't think I've heard anything like that.



Okay, I just can't let sleeping dogs be-

     from:
http://developer.apple.com/techpubs/macosx/Essentials/SystemOverview/SystemTechnologies/index.html




"Beneath the appealing, easy-to-use interface of Mac OS X is a rock-solid
foundation that is engineered for stability, reliability, and performance.
This foundation is a core operating system commonly known as Darwin, which
is also available as Open Source from http://www.apple.com/darwin. Darwin
integrates a number of technologies, most importantly Mach 3.0,
operating-system services based on 4.4BSD (Berkeley Software Distribution),
high-performance networking facilities, and support for multiple integrated
file systems. Because the design of Darwin is highly modular, you can
dynamically add such things as device drivers, networking extensions, and
new file systems."


     I do agree that Aqua is NOT themable, yet... Just give the Mac guys a
few more days, I'm sure they'll get that done as well.  And yes, I do have
too much time on my hands, I should go to lunch or something...  Just
kidding, I'd heard that it was micro kernel based when Darwin came out, and
I've got a friend doing some devel on Darwin, he's all up on how awesome it
is, but I just can't get excited about something aimed at the desktop, I
love my full version servers too much...



          Thanks again for listening, have a good day,




mbutler