I’ve been using different methods, all with the same results.
I’ve tried it straight from the camera.
I’ve tried it with the files copied to disk with the ClipBrowser.
I’ve tried it with copying everything with the finder as you described.
When I open the included XML in a text editor, there are also some weird numbers for the timecode (let’s say 17:13:44:46 in a 25p situation). My guess is the camera makes a “mistake” while writing timecode to the cards.
I’m also in touch with Sony support, but that might take a while…