mitydsp@mitydsp-dev:/etc/apt$ sudo sed -i -re 's/([a-z]{2}\.)?archive.ubuntu.com|security.ubuntu.com/old-releases.ubuntu.com/g' /etc/apt/sources.list
[sudo] password for mitydsp: 
mitydsp@mitydsp-dev:/etc/apt$ sudo apt-get update  && sudo apt-get dist-upgrade
Ign http://ppa.launchpad.net lucid Release.gpg
Ign http://ppa.launchpad.net/u-boot-tools/ppa/ubuntu/ lucid/main Translation-en_US
Hit http://old-releases.ubuntu.com lucid Release.gpg
Ign http://old-releases.ubuntu.com/ubuntu/ lucid/main Translation-en_US
Ign http://old-releases.ubuntu.com/ubuntu/ lucid/universe Translation-en_US
Ign http://old-releases.ubuntu.com/ubuntu/ lucid/restricted Translation-en_US
Ign http://old-releases.ubuntu.com/ubuntu/ lucid/multiverse Translation-en_US
Ign http://ppa.launchpad.net lucid Release
Hit http://old-releases.ubuntu.com lucid Release
Ign http://ppa.launchpad.net lucid/main Packages
Hit http://old-releases.ubuntu.com lucid/main Packages
Ign http://ppa.launchpad.net lucid/main Packages
Err http://ppa.launchpad.net lucid/main Packages
  404  Not Found
Hit http://old-releases.ubuntu.com lucid/universe Packages
Hit http://old-releases.ubuntu.com lucid/restricted Packages
Hit http://old-releases.ubuntu.com lucid/multiverse Packages
Hit http://old-releases.ubuntu.com lucid/main Sources
Hit http://old-releases.ubuntu.com lucid/universe Sources
Hit http://old-releases.ubuntu.com lucid/restricted Sources
Hit http://old-releases.ubuntu.com lucid/multiverse Sources
W: Failed to fetch http://ppa.launchpad.net/u-boot-tools/ppa/ubuntu/dists/lucid/main/binary-i386/Packages.gz  404  Not Found


################3 Second log after disable the http://ppa.launchpad.net lucid link from the Update Source Manager  #######################


mitydsp@mitydsp-dev:/etc/apt$ sudo apt-get update  && sudo apt-get dist-upgrade
Hit http://old-releases.ubuntu.com lucid Release.gpg
Ign http://old-releases.ubuntu.com/ubuntu/ lucid/main Translation-en_US
Ign http://old-releases.ubuntu.com/ubuntu/ lucid/universe Translation-en_US
Ign http://old-releases.ubuntu.com/ubuntu/ lucid/restricted Translation-en_US
Ign http://old-releases.ubuntu.com/ubuntu/ lucid/multiverse Translation-en_US
Hit http://old-releases.ubuntu.com lucid Release
Hit http://old-releases.ubuntu.com lucid/main Packages
Hit http://old-releases.ubuntu.com lucid/universe Packages
Hit http://old-releases.ubuntu.com lucid/restricted Packages
Hit http://old-releases.ubuntu.com lucid/multiverse Packages
Hit http://old-releases.ubuntu.com lucid/main Sources
Hit http://old-releases.ubuntu.com lucid/universe Sources
Hit http://old-releases.ubuntu.com lucid/restricted Sources
Hit http://old-releases.ubuntu.com lucid/multiverse Sources
Reading package lists... Done
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
mitydsp@mitydsp-dev:/etc/apt$ sudo apt-get install build-essential u-boot-toolsReading package lists... Done
Building dependency tree       
Reading state information... Done
E: Couldn't find package u-boot-tools