The cause of the failure is
=====
2008-11-06 04:17:11,226 DEBUG The package 'postgresql-plperl-8.2' is marked for removal but it's in the removal blacklist
2008-11-06 04:17:20,865 ERROR Dist-upgrade failed: 'An essential package would have to be removed'
=====
This is fixed in update-manager 1:0.95.1 .
If the upgrade still fails the workaround is to uninstall postgresql-plperl-8.2 before trying to upgrade.
Thanks for your report.
The cause of the failure is plperl- 8.2' is marked for removal but it's in the removal blacklist plperl- 8.2 before trying to upgrade.
=====
2008-11-06 04:17:11,226 DEBUG The package 'postgresql-
2008-11-06 04:17:20,865 ERROR Dist-upgrade failed: 'An essential package would have to be removed'
=====
This is fixed in update-manager 1:0.95.1 .
If the upgrade still fails the workaround is to uninstall postgresql-