Corrupted copy of K7.2 en DVD on kernel.org?

I set Seamonkey to download the 3.8 GB (non-boot) version of 7.2 DVD en from kernel.org via http last night, and it seemed to be downloading steadily as I went to bed. But when I checked this morning, the browser download manager showed the download as finished, and the downloaded file showed as a complete iso in the download directory on my hard drive, but both browser and file manager showed the iso's size as only 1.5GB.

I then ran md5sum on the iso, and it returns the sum:

d41d8cd98f00b204e9800998ecf8427e KNOPPIX_V7.2.0DVD-2013-06-16-EN2.iso

NOT the md5sum for the file listed on kernel.org:

836d36f87624c930a8ee375ca5492d69 *KNOPPIX_V7.2.0DVD-2013-06-16-EN.iso

Since Seamonkey thinks the file downloaded successfully, there's no way to resume the download, IF it was somehow botched. The logical conclusion seems to be that the file is corrupted or misnamed on kernel org.

I'd like to avoid having this happen again, so can anyone direct me to a mirror site where they know the file is available and passes the md5sum test?