Note: Change the class from "two-columns" to "three-columns" if needed Header Oracle Blogs Home Products & Services Downloads Support Partners Communities About Login Ksplice Blog Rebooting is obsolete Content Previous and Next Entries « ntris: an idea taken... | Main | Let's Play Vulnerabi... » Entries Jun 24, 2010 It's a well-documented fact that RAM in modern computers is susceptible to occasional random bit flips due to various sources of noise, most commonly high-energy cosmic rays. By some estimates , you can even expect error rates as high as one error per 4GB of RAM per day ! Many servers these days have ECC RAM, which uses extra bits to store error-correcting codes that let them correct most bit errors, but ECC RAM is still fairly rare in desktops, and unheard-of in laptops. For me, bitflips due to cosmic rays are one of those problems I always assumed...