package mysql-server-5.5 5.5.22-0ubuntu1 failed to install/upgrade: il sottoprocesso vecchio script di post-installation ha restituito lo stato di errore 1

Warning: World-writable config file '/etc/mysql/my.cnf' is ignored
120427 16:09:26 [Note] Plugin 'FEDERATED' is disabled.
120427 16:09:26 InnoDB: The InnoDB memory heap is disabled
120427 16:09:26 InnoDB: Mutexes and rw_locks use GCC atomic builtins
120427 16:09:26 InnoDB: Compressed tables use zlib 1.2.3.4
120427 16:09:26 InnoDB: Initializing buffer pool, size = 128.0M
120427 16:09:26 InnoDB: Completed initialization of buffer pool
120427 16:09:26 InnoDB: highest supported file format is Barracuda.
120427 16:09:27 InnoDB: Waiting for the background threads to start
120427 16:09:28 InnoDB: 1.1.8 started; log sequence number 1589339
120427 16:09:28 [ERROR] /usr/sbin/mysqld: Can't find file: './mysql/proxies_priv.frm' (errno: 13)
120427 16:09:28 [ERROR] Fatal error: Can't open and lock privilege tables: Can't find file: './mysql/proxies_priv.frm' (errno: 13)
ERROR: 1017 Can't find file: './mysql/proxies_priv.frm' (errno: 13)
120427 16:09:28 [ERROR] Aborting

120427 16:09:28 InnoDB: Starting shutdown...
120427 16:09:28 InnoDB: Shutdown completed; log sequence number 1589339
120427 16:09:28 [Note] /usr/sbin/mysqld: Shutdown complete

Thanks for taking the time to report this bug in Ubuntu.

Looks like you may have a problem with file permissions which is breaking the upgrade:

Warning: World-writable config file '/etc/mysql/my.cnf' is ignored

Please could you fix the permissions on /etc/mysql/my.cnf and then try to complete the upgrade by running:

   sudo apt-get -f install

Marking 'Incomplete'. If this does not resolve your issue please provide the log files from /var/log/mysql and set the status back to 'New'. If it does resolve your problem please set to 'Invalid'

Thanks

errno: 13 is 'Permission Denied'.

Please can you also check the permissions in /var/lib/mysql using the following command:

  sudo ls -lrt /var/lib/mysql/mysql

And then attach the output to this bug report.

Thanks

[Expired for mysql-5.5 (Ubuntu) because there has been no activity for 60 days.]