The upgrade (from 12.04 to 14.04) has aborted. Your system could be in an unusable state.

[JULIO GF]

Could not install 'linux-image-3.13.0-34-generic'
The upgrade will continue but the 'linux-image-3.13.0-34-generic' package may not be in a working state. Please consider submitting a bug report about it.
package linux-image-3.13.0-34-generic is not ready for configuration cannot configure (current status `half-installed')

Could not install 'linux-image-3.13.0-35-generic'
The upgrade will continue but the 'linux-image-3.13.0-35-generic' package may not be in a working state. Please consider submitting a bug report about it.
subprocess installed post-installation script returned error exit status 2

Could not install 'memtest86+'
The upgrade will continue but the 'memtest86+' package may not be in a working state. Please consider submitting a bug report about it.
subprocess installed post-installation script returned error exit status 64

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).

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.5
ProcVersionSignature: Ubuntu 3.2.0-67.101-generic 3.2.60
Uname: Linux 3.2.0-67-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.4
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Thu Sep 11 22:25:19 2014
InstallationDate: Installed on 2010-05-07 (1588 days ago)
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100427.1)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
Symptom: release-upgrade
UpgradeStatus: Upgraded to trusty on 2014-08-20 (22 days ago)
VarLogDistupgradeTermlog: