Keith
I downloaded 5.6 iso from the e-smith ftp site just a few days ago using plain jane Win98SE and IE 5.5 on a ADSL connection. Checked the md5sum was OK, burnt a disk and it works fine.
Corruptions generally occur during the download process, so I would definitely use a different method and server as well.
It's no use burning a CD if the md5sum is not correct, the CD will never work.
Regards
Ray Mitchell