Sometime back, and to finish some labs for a given class, I ended up needing to get an external USB based HD to copy the files over. It was an Active Directory class, and the respective Windows Server 2003 installations were in Virtual PC. Needless to say, those virtual HDD files present too much data to easily move. Anyhow, having 100 GB of external storage, I have since attached it to my PC for more storage, reformatted, etc However, going to watch some television shows I downloaded, 3 files showed up in Windows media player as codec unknown (not true, as they used the DIVX codec, and part 1, all of which were in the same directory played fine). Another download showed up as corrupted and wouldn't play. However all other downloads to that drive have worked fine. On the download that presented the 3, at least now (though previously unknown) bad files, Azureus noted that one IP address kept sending bad data (hundreds of times as I remember) and banned them from continued upload to my PC. It could be because of that (though one would think that with a detected bad packet, it would get it again). Does this sound like I should be concerned about the hard drive, a fluke, or what? Edit: BTW, I opened the tracker back up in the bit torrent program, after deleting the errant files. It's a 1.34 GB download or so, so it will take awhile before I can see if fresh copies will pose the same problem again or not.