Hi, some final update (I assume)... ;-) Seems that I've overseen something. During my investigations there has been an update of thunderbird's Debian package, which fixes the issues (by disabling the mentioned apparmor profile):
apt-listchanges: News --------------------- thunderbird (1:52.5.0-1) unstable; urgency=high The profile for AppArmor within Thunderbird is now disabled by default. Since the activated Recommends for the apparmor package in recent kernel-image packages it turns out there are to many things that simply not working like before if Thunderbird is using the current AppArmor profile. Please read README.apparmor for getting more information about the re-enabling of the AppArmor profile. People who wants to help to improve the AppAprmor profile are appreciated. Take also a look at #882048 for the reason behind that decision. https://bugs.debian.org/882048 -- Carsten Schoenert <c.schoen...@t-online.de> Sun, 26 Nov 2017 12:45:00 +0200 Regards, Gerhard
