@coeur-noir: Are you installing firefox to /opt/ as recommended or using it local in your user account?
as for bwarp, maybe it is known to be problematic. It is allowed to run and to create a user namespace but it is denied all capabilities within the namespace. Can you run sudo dmesg | grep apparmor and add the information here. -- You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to the bug report. https://bugs.launchpad.net/bugs/2046844 Title: AppArmor user namespace creation restrictions cause many applications to crash with SIGTRAP To manage notifications about this bug go to: https://bugs.launchpad.net/apparmor/+bug/2046844/+subscriptions -- kubuntu-bugs mailing list kubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs