Lately when using the Gnutella network I have noticed that there are 8-12 versions of each file each with a different size and checksum. The size difference is only visible when I look at the file size in bytes; they all are within 1000 bytes of each other. These files are hosted on computers with different IP addresses.
Is this a bug in Gnutella not saving the files properly or is an attempt to fill the network with fakes. I guess I have to download a few to find out. You can see this for yourself by searching for "twilight zone" of "three stooges" videos.