2 problems with the DVD torrent from the club

$ ll
total 772
-rw-rw-r--  1 marc marc 786432 Apr  1 00:08 
Mandrakelinux-10.2rc-DVD-Club.x86_64.iso
-rw-rw-r--  1 marc marc      0 Apr  1 00:06 
Mandrakelinux-10.2rc-DVD-Club.x86_64.iso.md5

Problem 1: no md5 sum (file size is 0!)
Problem 2: K3b does not want to burn the DVD, it claims it is a not a ISO9660, 
and I used the menu for burn DVD image.

Any help appreciated.