Closed Unassigned: abnormal disk activity [43181]

I have noticed that with the latest version of the TerraMap. That there is more then usual disk activity when moving the map around. I switched back to a version before this update and confirmed , with perfmon that the older version didnt access the disk as much or at all when moving the map around. heres a screen cap of the perfmon window [Imgur](http://i.imgur.com/nQ05iz4.png)