从 Ubuntu 10.04 升级到 10.10 时，分发升级程序在通知我更改/etc/apparmor.d/usr.bin.mysqld并要求我保留旧文件或接受新更改（我接受它们）后冻结。
终端说：
Configuration file `/etc/apparmor.d/usr.sbin.mysqld'
==> Modified (by you or by a script) since installation.
==> Package distributor has shipped an updated version.
What would you like to do about it ? Your options are:
Y or I : install the package maintainer's version
N or O : keep your currently-installed version
D : show the differences between the versions
Z : start a shell to examine the situation
The default action is …