I tried to install dng4ps-2.rpm on an Ubuntu 7.10 ( you can do that with Kpackage) but too many unsatisfied dependencies so I returned to dng4ps-2 Windoze under Wine, it works perfect. Rawstudio, Digikam, Rawtherapee, Photoline under Wine, and others I have open this DNGs. LightZone refuses to load and crashes, I guess this is a LZ problem, the Linux version is under heavy bugging and little support.