As you can see in the attachment, for some reason, all of my images are showing up as the default stock picture. They are not that at all, as I'm sure you know. I couldn't really specify my question without going into detail, so Google was a bit of a loss.
The only thing I can think of is to just...wait. If the size was changed or the cache removed it will take a long, long time for it to rebuild the icon database. Vista/7's bar on top is a good indicator of this. If it is solid white then it is something else.
Once you go there, you will see a folder named IconCache.db. delete it then restart your computer. (It automatically makes a new db file to replace via dllcache) what this does it reset your icon cache. (At first after restart it might take a bit for icons to show up while it gets cached)
If that does not work, then go and make sure Display icon on thumbnails is checked.