Thanks Kirk,
Same options with the Apple Finder default burn ap but they are always open (from 4x to 16x) not greyed out. Since my first post I'm noticing that this greyed out phenomenon with PM comes and goes. For example I'm burning a large 6 DVD archive now and I have to keep interupting and restarting the burn interface a few times before the speed option opens up... then the next disk is greyed out again and defaulting to the maximum speed.If it sticks on default maximum 16x, I need to shut down PM and relaunch and go back to the beginning before i have the open option again.
And I'm noticing also, stragely, that even if I set it on slow 4 x it burns at maximum speed finishing a full dvd in a few minutes whereas a single dvd through the Finder burn Ap takes a long time but is always a good burn. But with PM supporting bridging multiple disks with a large folder of many thousands of files it is obviously advantagous to use the PM burner interface if possible
-Peter