First of all, Canola was not promoted from extras-devel to neither extras testing, nor extras repository for Diablo and Fremantle. It's only available on the extras repository for the ancient and unmaintained Chinook, which runs only on the N800 devices. Anyway, I thought most of you who own one of those had already upgraded to Diablo long time ago. If not, you should do it ASAP. So basically this is one of the reasons why Canola has not been promoted to the extras repository yet. Application Manager can't handle conflicting packages correctly. There is indeed some lightmediascanner conflicting packages and it was needed so we could follow the upstream debian packages. One simple solution and something that proves that App Mgr is missing some feature (or it is indeed a bug - still need to check) is to get root on xterm and type: # apt-get install canola2 It will see the conflicts, but will also see that the new packages replace the old ones and installation will succeed.