Apparmor profile messed up after upgrade oneiric→precise, blocking mysql from starting

[MMlosh]

After upgrade to precise, mysql no longer wants to start.

$ sudo service mysql start
start: Job failed to start

After peeking into the upstart config file, I discovered that deamon itself runs fine.
The problem is the apparmor profiles
$ sudo /lib/init/apparmor-profile-load usr.sbin.mysqld
AppArmor parser error for /etc/apparmor.d/usr.sbin.mysqld in /etc/apparmor.d/usr.sbin.mysqld at line 44: Could not open 'local/usr.sbin.mysqld'

reinstalling the package fixed the issue, but having the database down without a reason was quite scary.
Please consider hunting this bug, even though most of the people probably upgraded already.

unfortunatelly, I forgot to preserve the broken profile file

[Aymeric (mulx)]

This bug seem the same as this one: #1011702 so I'm making it duplicate.