Turn Off Thumbnail Caching

 Every time you go into a folder which contains either pictures or movies, Windows creates a thumbnail image so you can see what that picture/movie is. The thumbnail cache helps speed up access to the thumbnails instead of having them load up every time you go into a folder, but each picture you have in a folder will take up around 2kb's. Follow these steps to disable this:

1. Go to 'Start->Settings->Control Panel'
2. Double-click on the 'Folder Options' icon
3. Click on the 'View' tab
4. Tick the 'Do Not Cache Thumbnails' check box
5. Click Apply, then click OK