Latest UBCD 5.3.1 can be download from
From various Mirror Sites (HTTP/HTTPS/FTP): http://www.ultimatebootcd.com/download/redirect.php
For Full list goto http://www.ultimatebootcd.com/download.html and search for "P2P" or "Mirror Sites"
Older versions are available via FTP from ftp://ftp.cc.uoc.gr/mirrors/linux/ubcd/
From various Mirror Sites (HTTP/HTTPS/FTP): http://www.ultimatebootcd.com/download/redirect.php
For Full list goto http://www.ultimatebootcd.com/download.html and search for "P2P" or "Mirror Sites"
Older versions are available via FTP from ftp://ftp.cc.uoc.gr/mirrors/linux/ubcd/