If you add a multifile torrent to download, and uncheck all files so that none should be downloaded, then sort the download list by "% Complete", it will jump up and down seemingly randomly in the list, rather than stay where it should among the 100%'s.

You may need a lot of downloads to see it happen... I have ~60 torrents in the download list, and ~10 of them at 100%, and a new torrent added like this will always jump around and the behavior is always easily viewable.

Using SVN 01/30/06.

The number it shows is 100 % ?

Yeah, it does show as 100% (and Seeding).

It seems that when I calculate the percentage, I do not take into account the fact that the number of bytes which need to be downloaded can be zero. Which results in divisions by zero (of floating point number).