Comment 4 for bug 204042

MySQL isn't installed in /opt. The myslqd is the Ubuntu one in /usr/sbin/mysqld. On this system, /usr/share is symlinked to /opt/share and has been since the system was installed (and prior to the mysql package being installed). The mysql package was upgraded a number of times with apt-get dist-upgrade and there was no problem until app armour came along. Since I purged apparmor, there hasn't been another problem. I think you have a problem with package dependencies. I don't think that the symlinked /usr/share is the cause of the problem.