rtorrent has issues with ntfs partitions. It's reported that rtorrent freezes when downloading on partition formatted with ntfs filesystem.[1]

Also, if the files are bigger than 4GB, data gets corrupted.[2]

1. http://askubuntu.com/questions/399775/constant-freezes-when-downloading-torrent-to-ntfs-partition
2. https://bbs.archlinux.org/viewtopic.php?id=192811
3. https://github.com/rakshasa/rtorrent/issues/194
4. https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=743734
5. Sorting/filtering 'started' and 'stopped' views causes announces to fire with v0.9.6: https://github.com/rakshasa/rtorrent/issues/449