I cannot remember the details of each incident but ONE stick is either half-dead (POST ok at bclock 133MHz only) or dead on Classified mobo @1.78 - 1.87Vdimm within a couple days.

2 kits of Corsair GT C7 3x2G (half dead): 1st set right after the first LN2 benching & 2nd set arrived half-dead

1 kit of OCZ Blade 3x2G (dead): Right after the first LN2 benching

2 kits of SanMax CL9 3x2G (half dead): during air testing for both kits