Well, after a week or so of using FCP4, I have noticed a few quirks... 1) FCP4 likes to gobble RAM, 1336 MB out of my 1500 MB. 2) Porting an FCP 3 project can produce glitches, particularly in previously nested sequences or those with significant effects and rendering. It seems porting a project with render files may NOT be the best idea. Like me, you might end up having to trash your renders in some cases, forcing a re-render, or worse, reworking a scene. It may save headaches to just do a fresh render of a project within FCP4 at the beginning of an edit. 3) FCP4 has crashed only once in a week, but with an interesting pixelated flourish. However, given FCP3 never crashed in like fashion (while tweaking filters) I would suggest setting the auto-save to five or ten minutes rather than the default (30). 4) Firewire drives may not like significant daisy chaining. I have 9 ADS Pyro (Oxford 911) in three flavors daisy chained, primarily to add another 500+ gigs to FCP4 for a feature edit. I've seen some odd behavior in the chain resulting in insufficient speed for video playback... even after offlining the apparently offensive drives. Well, that's enough for now. Will report on any new findings as they happen. I will be completing a DVD via FCP4's Compressor tonight... Richard Brown