I have 1 120gb hd in this system, partitioned into 3 partitions. for the past couple of weeks, I can't run defrag, cause I get an error saying checkdisk is scheduled for my data partition, even when I just restarted and ran checkdisk through with no errors or bad sectors. I'm using diskeeper, and uninstalled and reinstalled to try it that way, no dice. What would cause this?