I cannot be 100% shure that there hasn´t been any auto uppdate or someone here been updating something.
but I am using FCP 7.03, KONA 8.0, and OSX 10.6.4 and one with OSX 10.6.6, same that was ok for you.
We have one suite now with a Black Magic card, its been frame accurate since we got it, (over 6 monthes). but it has some other problem. for example the first frame you lay of is really bad quality. but then you can just have a second black before your spot.
I will also post any findings in this problem, good or bad!
Joakim Bergqvist
Mastering
Stopp, Stockholm