11.10 upgrade to 12.04 failed: Could not perform immediate configuration on 'mysql-client-5.5'

[piovisqui]

Upgrading
start: Job is already running: apport
Fetched 0 B in 0s (0 B/s)
Exception during pm.DoInstall(): E:Could not perform immediate configuration on 'mysql-client-5.5'. Please see man 5 apt.conf under APT::Immediate-Configure for details. (2)

Could not install the upgrades

The upgrade has aborted. Your system could be in an unusable state. A
recovery will run now (dpkg --configure -a).

Please report this bug in a browser at
http://bugs.launchpad.net/ubuntu/+source/update-manager/+filebug and
attach the files in /var/log/dist-upgrade/ to the bug report.
E:Could not perform immediate configuration on 'mysql-client-5.5'.
Please see man 5 apt.conf under APT::Immediate-Configure for details.
(2)

Upgrade complete

The upgrade has completed but there were errors during the upgrade
process.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[peterrus (petorrus)]

installing the mysql-client-5.5 package and then doing do-release-upgrade seems to fix the problem