========CONSOLE LOG=========
rolandog@rolandog-HP-Notebook:~$ update-manager -d
Fontconfig warning: "/etc/fonts/conf.d/50-user.conf", line 9: reading configurations from ~/.fonts.conf is deprecated.
Checking for a new Ubuntu release
authenticate 'raring.tar.gz' against 'raring.tar.gz.gpg' 
extracting 'raring.tar.gz'
WARNING: Failed to read mirror file


=========ERROR MESSAGE===========
Could not install 'gconf2'

The upgrade will continue but the 'gconf2' 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 1