YOu may have recorded your audio at 32K. FCP preset is defualted to 48K audio. Double check these settings and if nessesary create a custom setup to match the footage you ahve shot.
If you are installing on Leopard on some new machines it can take a VERY long time. WAlk away from it for a few hours if it freezes and make sure it’s frozen.
Otherwise, I think you can add it to the list of LEOPARD problems.