Jenkins CI Slave on Ubuntu 10.04 Lucid LTS Howto
Configure a Jenkins slave on Ubuntu 10.04
It seems that despite all the hard work of the Jenkins team to ensure a smooth move over to the new name, some of the maven repositories have not been updated just yet.
I run a Hudson, (now Jenkins) CI server on windows XP.
The Jenkins git plugin is broken if you have repositories that use HTTP auth (See: http://issues.hudson-ci.org/browse/HUDSON-3807, http://issues.hudson-ci.org/browse/HUDSON-7091).