Torrents that have finished downloading seem to be leaving behind duplicates of the files in the torrent with !ut added at the end of them. An example would be the file names below.
The !ut files are the same size as their non-!ut counterpart. I did a search on the hard drive where my torrents download and there are hundreds of !ut files. I deleted the !ut files in a few of the impacted directories and the directory size immediately dropped by half so they do appear to be real copies of the files. It also seems to be impacting all file types - video, text, sub files, etc.
Based on the folders that the !ut files are in, I would say that this started happening recently as the older stuff I've downloaded doesn't seem to have them.
Does anyone have any idea what might be causing this and how I can prevent it from happening? The uTorrent version is 3.5.1 and it's running on Windows 7 x64 if that makes any difference.