I have the same issue.
https://forums.creativecow.net/cgi-bin/new_read_post.cgi?forumid=3&postid=857583
I found that I can not capture frames-dropped-free to my only 7200rpm media drive — it’s an external 1394 drive. I am experimenting with this:
Capture to a 7200rpm internal SATA or ATA drive
Transfer the files/footage to my external 1394 drive
Edit from the external 1394
A short test (<5 minutes) worked two nights ago.
Good Luck,
David