Version: 4.0beta1 (using KDE 4.3.4) OS: Linux Installed from: Debian testing/unstable Packages When resuming a torrent that has had diskspace reserved, if the space left if lower than the file size ktorrent will think there is not enough space - even though the space was successfully reserved.
This can happen if "Fully reserve disk space" is not enabled. Default disk space reservation uses sparse files.