I run unstable AMD64. Apparmor was installed on a routine update 3 days ago, preventing akonadi - and hence kmail -from starting on the next reboot.
The error in akonadiselftest was: stderr: "Could not open required defaults file: /home/USER/.local/share/akonadi/mysql.conf\nFatal error in defaults handling. Program aborted\n" My machine is now apparmor free. It took me a couple of hours to track this down; offered up in the hope that someone else might save some time. -- anxiousmac
