After a brief web search, it could also be SuperFetch, which you can also turn off.
You can also go to Administrative Tools > Reliability and Performance Monitor and on the right, click on the drop-down arrow to see what program/service is accessing/using the CPU, Hard Disk, Network or Memory.
>Already done. I thought that might be the culprit, but the activity is still there.
Craig Berntson
MCSD, Microsoft .Net MVP, Grape City Community Influencer