I stumbled across these two interesting programs yesterday.
KX Generator is an X xorg.conf generator which takes some of the manual work out of it. Supports several cards including Nvidia (Twinview too!) and i810. There are a few precompiled debs. The one that worked for me (on Gnome) was Valombre’s Kubuntu Edgy Package. Required 5 additional KDE libraries to be installed.
KoffeePhoto is a non-free (i.e. not GPL) java based p2p picture sharing system.
KoffeePhoto stores all your original pictures on its secure and private peer-to-peer storage network, providing access to the photos in their native resolution anytime and anywhere.