I am having the same issue laying to a Sony DVW-500 using a Kona LHe card (have also tried with the Blackmagic SDe version as well) with FCP 5.0.4 on a G5 running 10.4.5. It is extremely random. We will have 30 :30 second spots in a timeline with :30 of black between each, and over the span of the layback to tape, we notice a drop or addition of audio frames to the layback. You can look at the sequence, and no errors are shown. We work around the problem by laying back multiple times in some cases, but as everyone knows this is extremely inefficient. How ideas?
Thanks,
Jason