I came across this bulletin when I was troubleshooting the same “idle” problem when importing Panasonic P2. I have FCP running on 5.1 and Snow Leopard.
After troubleshooting to no avail, I decided that the problem was probably FCP 5.1 running on Snow Leopard. I uploaded on someone else’s desktop with FCP 6.0 on Snow Leopard and there were no problems. However, I couldn’t grab the uploaded media and put it in an FCP 5.1 file because 6.0’s formatting didn’t work with 5.1.
In a last case scenario, what I recommend doing once uploaded on another FCP is export using Quicktime Conversion with highest quality render and then importing into 5.1. The footage looks unchanged. It’s a hassle, but because my footage was twenty minutes of an interview, it was an easy sacrifice to make in order to deliver the project on time.