You are correct, it means that you downloaded a piece of data from a peer and it wasn't 100% intact, so the bittorrent protocol will delete that piece. This assures you that nothing nasty like a virus could infect a piece of data and survive.
The cause of this could be data damaged in transit, data damaged after it was received by you due to harddrive and/or file system errors, or a hostile peer sending bad data to interfere with p2p downloads.
I can't tell you which of these most common reasons is effecting your torrent, but if you get this on all torrents, then I'd suspect the problem is on your system and I'd run some scans. If it only happens on one (or few) torrents, then it could be a bad peer, either intentionally or due to poor connection.
Also understand that the larger the torrent, the greater the odds of finding errors.
There are also some conditions that usually only effect old routers where they will rewrite packets of data to change what they believe is an external IP address to match your internal IP address, but in this case, the same piece will fail has on every attempt, no matter what peer it comes from. This will randomly effect torrents greater then about 4gB at least once (one piece that will never download intact). It's not likely you have this problem though, and I wouldn't suspect it unless your download stops at 99.9% AND you continue to download the same corrupt piece from many peers.
You are correct, it means that you downloaded a piece of data from a peer and it wasn't 100% intact, so the bittorrent protocol will delete that piece. This assures you that nothing nasty like a virus could infect a piece of data and survive.The cause of this could be data damaged in transit, data damaged after it was received by you due to harddrive and/or file system errors, or a hostile peer sending bad data to interfere with p2p downloads.I can't tell you which of these most common reasons is effecting your torrent, but if you get this on all torrents, then I'd suspect the problem is on your system and I'd run some scans. If it only happens on one (or few) torrents, then it could be a bad peer, either intentionally or due to poor connection.Also understand that the larger the torrent, the greater the odds of finding errors.There are also some conditions that usually only effect old routers where they will rewrite packets of data to change what they believe is an external IP address to match your internal IP address, but in this case, the same piece will fail has on every attempt, no matter what peer it comes from. This will randomly effect torrents greater then about 4gB at least once (one piece that will never download intact). It's not likely you have this problem though, and I wouldn't suspect it unless your download stops at 99.9% AND you continue to download the same corrupt piece from many peers.
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