http://mono-project.com/DistroPackages/Ubuntu a zde se doctete nasledujici:
As a result, Mono cannot officially be backported in Ubuntu.
Unofficial Packages
Ubuntu Hardy (8.04 LTS)
Users of Ubuntu 8.04 LTS (Hardy Heron) can install 2.4 branch snapshot by using Synaptic from the badgerports repository. badgerports is an unofficial community project from one of the Debian/Ubuntu Mono developers to ship latest Ubuntu packages for Ubuntu LTS users. Please visit the URL below for full information on enabling these packages:
http://badgerports.org/hardy.html
Ubuntu Lucid (10.04 LTS)
Users of Ubuntu 10.04 LTS (Lucid Lynx) can install 2.10.8.1 by using Synaptic from the badgerports repository. badgerports is an unofficial community project from one of the Debian/Ubuntu Mono developers to ship latest Ubuntu packages for Ubuntu LTS users. Please visit the URL below for full information on enabling these packages:
http://badgerports.org/