NIS 2010 Continuous hard drive access

I upgraded NIS 2009 to 2010 over the weekend and the ccSvcHst process has been racking up I/O Read Bytes at a steady clip of 8096 bytes per second.  I ran two full scans to completion after install/reboot and rebooted after each.  Right now task manager says my PC has been up for just under 70 hours and the process has about 17.9 GB of I/O reads and an hour of CPU over that time.  Last night I calculated 8096 * the number of seconds in 10 hrs, and when  looked this morng it was nearly dead on.

 

I turned off all of the components of NIS from the main screen for a 15 minute period, and the service kept reading at the steady clip.

 

I tried on-line chat with tech support but the very first suggestion was to uninstall and reinstall the entire application.

 

I don't know if there's any disk reliability issues, but the ongoing clicking of the drive running nearly full time is quitre annoying. Anyone else experience this or have any ideas?