I have two students with whom I have just installed Omeka on revived laptops running Xubuntu 12.04, so I documented the process in the same HTML format as the existing pages.
Where should I upload this, or to whom should I send it? It's at http://oimelc.ucc.ie/omeka-install-ubuntu-12.04.html if you want to take it.
I assume pages are done in a wiki or CMS form, so if you want the code converted, let me know.