I previous wrote about the annoying issue with windows 7 and the thumb.db where it creates and error when you try to delete a folder after viewing the contents. Here is a quick guide to remove the issue. However it can slow down the initial view on a folder.

1. First run gpedit.msc
2. Then navigate to Local Computer Policy->User Configuration->Administrator Templates -> Windows Components->Windows Explorer
3. Then double click the "Turn off caching of thumbnail pictures". Set the property to enabled.

You will then need to update the group policy using gpupdate /force and then reboot. Or if it is not urgent to turn off it will apply after the next reboot or two. Depending on when the group policy is updated.