Just to add my experience here, might help somebody: using new AllBest build 50, PC on Oz OS (Linux Ubuntu 7.10), have tried Ufraw, Rawstudio, Gtkam, Gphoto2, Rawtherapee and Lightzone, no joy. Then tried to compile Dng4ps2 beta from source: too many unsatisfied dependencies, gave up. No .deb packages either so I downloaded and installed the Windoze executable of dng4ps2 beta installer into Wine. Runs perfect, converted some Raws downloaded from my SD USB card reader to DNGs and uploaded them to either Rawtherapee 2.3 or LightZone to work with. This is my setup until RT's next version, which will include direct support for A650IS as it will use Dcraw 8.83 (includes A650 support). Regards. Alex