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Re:Mac OS X 10.6 Snow Leopard - Now Available (Delivery on A... by stuff4ben on Monday August 24, 2009 @10:33AM (#782199)
What Unix upgrades?
Re:Mac OS X 10.6 Snow Leopard - Now Available (Delivery on A... by cubicle67 on Monday August 24, 2009 @10:51AM (#782244)
Leopard was the first version of OSX (actually, first BSD based OS) to receive UNIX 03 certification

http://www.opengroup.org/openbrand/register/brand3555.htm

Re:Mac OS X 10.6 Snow Leopard - Now Available (Delivery on A... by rbanffy on Monday August 24, 2009 @11:40AM (#782362)
That's not exactly a good reason to upgrade by itself.

It could be if you were required by some regulation to use a UNIX certified OS. IIRC, there were little feature changes that warranted the certification.

As for myself, I have an older iMac that won't run SL, a netbook that runs Linux and I am perfectly happy with both.