[ptsapralis]

Apple MacBook Pro, 2.4 GHz, 4 GB, 200 GB, Mac OS X Leopard ver. 10.5.7 + WD My Passport Studio, 500 GB, FW400/800, USB 2.0.

I have been trying several times to back up the content of my root hard disk drive on to the WD external drive (connected through FW800) - however, it always froze badly: no shutdown or restart, no eject / unmount, no Disk Utility - I could only shutdown the laptop by using the power switch.

When connecting the portable drive through FW400, SuperDuper! seems to work OK and completes the backup task properly.

Is this some hardware issue or am I doing something wrong with SuperDuper!?