@gidzzz: I've just tried to import a ics file by opening it with microb, but it only pops up qalendar and nothing happens.
Someone else experienced issues with ics import ?

NB: in order for mime_open magic to happen, I had to reinstall calendar and therefore to edit /usr/share/dbus-1/services/com.nokia.calendar.service to replace /usr/bin/Calendar by /usr/bin/qalendar, since Calendar reinstall overwrote my first modification of this file