because that is not needed with fully optimized apps. normal users shouldn't even use extras-testing and extras-devel if they don't know how to play around with these things. just look at output of df |grep rootfs, remove package, look at output. if the difference is big, leave app uninstalled. if it is small, reinstall app. have you already moved app managers cache? http://wiki.maemo.org/Free_up_rootfs...side_of_rootfs