I experince the same thing,crucial side damm fast.I wait like 3weeks due to the fact i use cheapest postage
Ram arrive at crucial site,tomorrow ship out and get it few days later
BTW,I think can claim postage back from crucial but not sure on that
Crucial PCB is quite think,hmmmm Maybe that why it die
My Xtreem got more benching hour and at tighter timing,higher v but still alive