I have the same camera, and I am sorry, but, I have nothing but bad new for you I am afraid. Its the Camera, and the format it uses.
Some questions:
-I assume you shot the video in HD?
-What are you trying to import with?
The gr-hd1u is only supported by about 3-5 no-name editors and importing software, it has no support from any of the major editors. I have got it to mostly work with FCP though.
-Any-other details would be good also.