Seems to me this is one of the areas LW lets users down with torrents.
With some other 'torrent only' programs such as uTorrent & Vuse, it is easy as pie to restart torrents if something goes wrong with the computer that mucks up the downloading. Question is what the exact problem is. You could arguably try using either of those programs mentioned & open the torrent up with them to see if they recognise the previous download % & continue the torrent. LW 5 unfortunately does not have resume functions, once a download vanishes from the download window for whatever reason you cannot restart it usually. For gnutella network files you can go back to LW 4, resume the incomplete downloads then revert back to LW 5, but I do not know if this would work with torrents.

Are the incomplete torrent files showing up in the Download window at all? If yes, I wonder if someone 'kick & banned' you for downloading using LW.

By 'kick & banned' you for downloading using LW I take it you mean that my broadband provider or somebody is taking action against me. That is not happening - just a few minutes ago I downloaded another torrent chosen at random and it worked. I have reverted to LW 4.1.18 and installed utorrent and Vuze, but nothing seems to work - they all have their own error message.

In answer to other points, the number of peers varied but was normally about 50. The speed also varied, but when it stopped it was due to finish in about six days, having got through about 52gb out of 86gb. It was by far the largest torrent I have ever used, but it worked fine for nearly a fortnight.

The problem seem to be limited to one torrent only. Am I allowed to name the torrent on this forum? There are two similar ones, both giving the same size of download, and neither of them work on any program, even though one previously worked fine for a time.

M