Ubuntu 9.10 karmic download

Alternate install CD for 64-bit PC (AMD64) computers
old-releases.ubuntu.com/releases/9.10/ubuntu-9.10-alternate-amd64.iso [696MB] 

Alternate install CD for PC (Intel x86) computers old-releases.ubuntu.com/releases/9.10/ubuntu-9.10-alternate-i386.iso [690MB] 

Ubuntu 5.10 Breezy download

Install/live DVD for 64-bit PC (AMD64) computers
old-releases.ubuntu.com/releases/5.10/ubuntu-5.10-dvd-amd64.iso [2.9GB] 

Install/live DVD for PC (Intel x86) computers  old-releases.ubuntu.com/releases/5.10/ubuntu-5.10-dvd-i386.iso [2.8GB]

Ubuntu 6.10 Edgy download

Alternate install CD for 64-bit PC (AMD64) computers
old-releases.ubuntu.com/releases/6.10/ubuntu-6.10-alternate-amd64.iso [695MB]

Alternate install CD for PC (Intel x86) computers
old-releases.ubuntu.com/releases/6.10/ubuntu-6.10-alternate-i386.iso [697MB] 

Ubuntu 4.10 warty download

To install CD for AMD64 computers,
old-releases.ubuntu.com/releases/4.10/warty-release-install-amd64.iso [540MB]

To install CD for Intel x86 computers,
old-releases.ubuntu.com/releases/4.10/warty-release-install-i386.iso [523MB]

Ubuntu 10.04 LTS download

For 32 bit Ubuntu 10.04 LTS,
www.ubuntu.com/start-download?distro=desktop&bits=32&release=lts [694 MB]

For 64 bit Ubuntu 10.04 LTS,
www.ubuntu.com/start-download?distro=desktop&bits=64&release=lts [696 MB]