[dnanian]

Since you've sent this to support as well, I've answered there... feel free to follow-up here once we've got this figured out.

(Note, for those reading -- SuperDuper! doesn't have any kernel-level code, so it can't directly cause a Kernel Panic. It does work your system quite hard, though, and other programs -- especially antivirus software -- can fail when presented with this amount of file I/O...)