It has been pulled from Windows update, but if you wait it'll be back. At that point it will be up to 315MB or whatever... it will only download as much as is needed.
I installed it in 3 systems so far. No problems or slowdown like anfjavid claims. Not sure about any speed improvements, maybe it's there or maybe not.
Still have one system with SP2, maybe I'll run PCMark and again with SP3... just for the heck of it to know if there's any, even if tiny winy speed improvement.
Am just downloading SP3 from the link given in Page - 1. Have any of you downloaded from that link ? Is it the full version or any of the RC's ?? Thanks for your reply.