DigiKam is neat, and so is Ubuntu. After a fresh install I've got some serious bug in DigiKam though. After attaching the camera (EOS 400) and starting the download photos dialog, DigiKam crashes with a "segmentation fault 11". I have found very little about it on the web, mostly bug reports with no solution. I made some changes to the settings in DigiKam, and it seems that it might help. Update: Seems like theres no logic in what settings you have, but if you go to the preferences and do some "check" and "uncheck", it seems like DigiKam gets a little more stable. Please post a comment if you are successful or not with this solution: Try to disable some of the plugins in DigiKam, making it more stable and less dependent to other binaries. Heres my list, which actually got me downloading the photos from my camera. (by default, all plugins are checked).
A solution is provided, as the 1.1.0 is released. Please see this post.