It is essentially a file that has to do with your thumbnail images, which are the little pictures in your file folders that represent the actual pictures.
There should be one anywhere that you have images in a folder.
thumbs.db is a file that windows generates when you look at pictures. It contains all the little mini-pictures that show up when you're looking at a directory of pictures. It's safe.
Don't let these ninja hacker posers fool you. It's a database of the thumprints of everyone who has ever used the keyboard on your computer. They're recorded by a hack of the keyboard driver that reverses the polarity of the key solenoids to detect electrostatic contact prints each time you press a key. The first virus that created thumbs.db files was called "FiNgErL4wg." All the files contain the same data, but it duplicates them in many randomly selected folders to ensure that at least one will be available when it needs to upload the database to a remote bot host over the internet, which it does several times a day.
Thumbs.db is where Windows stores the thumbnails for pictures after the thumbnails have need generated. This is to speed up the reloading of the thumbnails.
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It is essentially a file that has to do with your thumbnail images, which are the little pictures in your file folders that represent the actual pictures.
There should be one anywhere that you have images in a folder.
edit: I was ninja'd!! :eek:
edit: and I ninja'd someone else too...