Thanks for the response.
I have actually spent several days searching these forums, and the wild-n-woolly web in general, as well as reading the download faq several times, prior to posting.

Quote Originally Posted by ckamin
You did not mention what version of windows you were running and what file system your drive is formatted with, but looking at your errors, it may not be the issue.
Windows 2k, C: drive is NTFS, drive I'm downloading to is FAT32, with 15 GB available. I have not yet run the suggested disk-check procedures, but will do so.

Quote Originally Posted by ckamin
I would also suggest saving the files to a directory that you create somewhere on your drive and NOT on the desktop.
Do you mean the .torrent file (which I currently have on my desktop), or the directory for the ISO (which I have been putting on another drive altogether)?

I have never had another Torrent program installed, so there's no remnants there. I didn't run anything from my first download, so no viruses from there.
I started with FTP, and that failed several times (due to my computer randomly rebooting in the middle of a 3 day download...), which is why I switched to Torrent in the first place.

Quote Originally Posted by ckamin
One thing that might make a difference is that you should use the MD5 files that apply to the file that you downloaded and obtained along with the file from that source. I might assume it would be the same for ftp and torrent, but it may not be the case.
Both md5 sums are the same (from Torrent and from ftp) - that was the first thing I checked upon my initial failure, and I am quite certain I checked the right file's md5 sum - about 7 or 8 times, with 4 different md5 tools, each of which gave me exactly the same non-matching answer. Out of curiosity, what is the checksum of your copy of the 4.0 ISO?

Cheers.