Ihad 470 errors in a space of two hours, error log tells me toscan my disk, which i did and it found no errors.The only thing i noticed was my system was sluggish for 2 mins or so.My system runs ok and i dont see any thing affected from this error.At the time i was surfing the net and then played chess titans, which is when i noticed the sluggishness.Windows 7 rc7100 Nvidia geforce 8600GTMany thanks for any info.P.S. I have Windows security essentials beta which i ran and it found no probs.