On Wed, 20 Dec 2006 22:15:50 GMT, Alistair John Strachan said: > Seems pretty unlikely on a 4 year old Via Epia. Never had any problems with it > before now. > > Maybe a cosmic ray event? ;-)
More likely a stray alpha particle from a radioactive decay in the actual chip casing - I saw some research a while back that said that the average commodity system should *expect* to see 1 or 2 alpha-induced single-bit errors per year, and the chance that *you* saw the event was directly related to whether the memory had ECC, and how much of the other circuitry had ECC on it....
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