I just installed the ATI X800 into my G5 DP 1.8 (Rev A). I've been getting an acrid smell from the computer since the upgrade. This is worst when I run folding@home (2 clients). It's obviously related to the X800, but when I popped open the machine, it seemed as if the greatest amount of heat was coming from the processor closest to the AGP slot. I ran the machine with only the clear plastic cover, and the fan on the X800 does appear to be spinning. Any thoughts? Is the X800 card defective? Is there a "burn in" period? Does the X800 draw too much power (wattage)? Any thoughts/advice would be greatly appreciated.