I have more information on this bug. If the event is generated by another Kontact, it is the same, the receiving Kontact can't delete it. Now, if in the receiving Kontact I edit the event and delete the participant (the owner of the receiving Kontact), then the event can be deleted. I would say this might be worth reporting upstream, bugs.kde.org, right ?
-- Deleting Evolution meeting in Kontact https://launchpad.net/bugs/50745 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs