You are not alone. I am having the same problem, but with FCP 5.04, capturing from a CanonXL2, with a Powerbook G4 OX10.4.7, QT 7.1.3, to an exernal G-Raid (raid 0) firewire 800. The camera is hooked up to a firewire PCI card, while the drive is on the internal firewire buss. I am also experiencing occasional audio stuttering. This only happens on playback of the captured clip, and is not on the original miniDV.