Comment 1 for bug 950097

That used to work in oneiric, or more precisely, with the firefox version we had back then. Chris, right now u-d-b does this in distribution.ini:

[Preferences]
browser.startup.homepage="http://www.ubuntuforums.org?release=12.04"
browser.startup.homepage_reset="http://www.ubuntuforums.org?release=12.04"
<email address hidden>custom_homepage="http://www.ubuntuforums.org?release=12.04"
startup.homepage_override_url="file:///usr/share/ubuntu-artwork/home/firefox-index.html"

Where the last one is the offline homepage, and the first three are the online ones. I suppose we need to set different keys?