I have a strange issue that I've had ever since I installed my spare 40GB drive. Every time I am accessing the drive for more than a few seconds, the mouse will start to act choppy. It seems like every half second, the mouse will hitch up and then continue on. The choppyness is very evenly spaced, every half second it pauses, just briefly, then will continue to move normally. After the operation on the spare drive is done things will resume normally. This makes playing games stored on this drive pretty much impossible, because of the choppyness. I've run scandisk, defrag, etc and no problems have been found. It's a 40gb IDE maxtor HDD.