Quote Originally Posted by rbrigham
I am running h25 on my dual2.0 G5 (bought from HES 2.5 years ago). I am currently running 10.3.8 which is recommended on the blackmagic design page for the decklink extreme.
not sure which page you saw that?

unless that page is old - this is not something that blackmagic would be recommending. - see below.

Quote Originally Posted by rbrigham
I'm not at all knowledgable on the Mac. Is 10.3.8 that much different than 10.3.9 that you wouldn't recommend it? My system hasn't shown any real problems recently, but I also don't push it that hard.
there were actually major changes - mostly hidden - at 10.3.9 - such that 10.3.9 is the only version supportable by any applications that are built with apples development system...