https://bugs.kde.org/show_bug.cgi?id=352701
--- Comment #7 from Nick <nick.craig....@gmail.com> --- Doing a more /var/log/apt/history.log | grep mysql I can see that akonadi-backend-mysql was updated just before I started getting this problem. I'm almost certain that's what messed up the mysql database and was the answer to run mysql_upgrade as described here ? https://dev.mysql.com/doc/refman/5.5/en/performance-schema-build-configuration.html At least I'm feeling a little more confident about the akonadi-backend-mysql update having triggered this problem. -- You are receiving this mail because: You are the assignee for the bug.