Next SONY will come out with a DSLR with two CF slots and you can chose to have it configured as RAID-1. Then no need to worry about card failure anymore. :bsmilie:
Canon already have something similar on the 1Dmk2, 1 copy is written to CF while another is written to the SD slot simultaneously. No prize for guessing what other kind of slot $ony will use if there is ever going to be dual memory slots.