got a bad prob. Rendering a set globe shots under the gun over the weekend for brick wall deadline on monday. Using max 8, under xp with a 3.2 xeon and 2 gig of ram. left an overnight render (its earth v2 fromn turbosquid with huge 5k plates for earth textures). Afew times in test renders it told me it hadnt paged the frame properly and there could be artifacts, true enough there were. Set off the overnight 12-18 hr render, babysit for a few frames no probs, when i come back today there's intermittent artifacting everywhere: jumps in luminance, saturation, you name it. max didn't stop & report errors or anything. Anyone know whats at issue here? is there some setting i can alter to stop this from happening? Any responses gratefully accepted.