Doesn't sound that far-fetched. Here's a slightly newer story where cosmic rays caused address lines to generate spurious signals, and radioactive lead solder c

Doesn't sound that far-fetched. Here's a slightly newer story where cosmic rays caused address lines to generate spurious signals, and radioactive lead solder caused L1 cache corruption on a bg/l machine: http://spectrum.ieee.org/computing/hardware/how-to-kill-a-supercomputer-dirty-power-cosmic-rays-and-bad-solder http://spectrum.ieee.org/computing/hardware/how-to-kill-a-su...