I have had several crashes where the hard drive lights up, stays on and the machine freezes. I live in Western Washington state so there is no real need for air conditioning so we don't have any but for fans. Sometimes after these crashes I have scandisks going off and further eveidnce that it's the hard drive crashing the system is that A. The Vidcard is not engaged in any action nor is it overclcocked, B. The CPU never seems to get over 55C, and C. The crash happened once during a disk defrag. So anyway the Hard drives were stacked right on top of each other and there was no breathing room for the one in the middle (C: ) because it was between the floppy drive and the other hard drive. C: is a WD 7200RPM 80GB 8MB Cache and the other one is a 7200RPM 40GB WD. I unstacked them and split them up in the case and it seems to have helped, but should they have active cooling as well?