libsdl-mixer problem was that libsdl-mixer1.2 1:1.2.6-5+0m5+ogg+mp3 is wat is present in maemo extra while libsdl-mixer1.2 1:1.2.6-5+0m5 is needed which is in nokia system repo. before updating via xterminal of app manager jst turn off maemo extra,extra-testing and extra-devel repo