Timur I am not sure this issue is related to mysql-common. The modification of my.cnf regarding /usr/share/percona-server is done in the preinst file of percona-server in just this upgrade. Yes this and the previous release of Percona, result in mysql-common which *prompts* about a my.cnf change, but you can say 'No' to that. In this case here, the user doesn't even get the choice to accept this change.
Timur I am not sure this issue is related to mysql-common. The modification of my.cnf regarding /usr/share/ percona- server is done in the preinst file of percona-server in just this upgrade. Yes this and the previous release of Percona, result in mysql-common which *prompts* about a my.cnf change, but you can say 'No' to that. In this case here, the user doesn't even get the choice to accept this change.