My system is Win 7 Uitimate, 64 bit. I have tens-of-thousands of jpg images that I need to sort through. Somewhere along the way, Explorer stopped displaying all of the icons or thumbnaiils. I can turn icons on/off, and I cleared the icon cache, but I cannot get all of the icons in a folder to be displayed. I recall that there was a setting in XP that limited the amount of memory available for icons/thumbnails, but I cannot seem to locate this same info for Win 7. What controls this behavior? How do I adjust it?