Comment 2 for bug 897460

Ok, I had a problem with the PGP key, and this solved the problem of the empty descriptions, but it will still not upgrade the packages:
http://ubuntuforums.org/showpost.php?p=11290186&postcount=2

sudo unattended-upgrade --dry-run --debug
Initial blacklisted packages:
Starting unattended upgrades script
Allowed origins are: ['o=Ubuntu,a=oneiric-security', 'o=Ubuntu,a=oneiric-updates', 'o=Ubuntu,a=oneiric-partner', 'o=deb http,a=//archive.canonical.com/ubuntu oneiric partner']
Checking: acroread-common (["<Origin component:'partner' archive:'oneiric' origin:'Canonical' label:'Partner archive' site:'archive.canonical.com' isTrusted:True>"])
Checking: adobe-flash-properties-gtk (["<Origin component:'partner' archive:'oneiric' origin:'Canonical' label:'Partner archive' site:'archive.canonical.com' isTrusted:True>"])
Checking: adobe-flashplugin (["<Origin component:'partner' archive:'oneiric' origin:'Canonical' label:'Partner archive' site:'archive.canonical.com' isTrusted:True>"])
Checking: adobereader-deu (["<Origin component:'partner' archive:'oneiric' origin:'Canonical' label:'Partner archive' site:'archive.canonical.com' isTrusted:True>"])
Checking: handbrake-cli (["<Origin component:'main' archive:'oneiric' origin:'LP-PPA-stebbins-handbrake-snapshots' label:'HandBrake Snapshots' site:'ppa.launchpad.net' isTrusted:True>"])
Checking: handbrake-gtk (["<Origin component:'main' archive:'oneiric' origin:'LP-PPA-stebbins-handbrake-snapshots' label:'HandBrake Snapshots' site:'ppa.launchpad.net' isTrusted:True>"])
Checking: sopcast-player (["<Origin component:'main' archive:'oneiric' origin:'LP-PPA-ferramroberto-sopcast' label:'LffL Sopcast' site:'ppa.launchpad.net' isTrusted:True>"])
pkgs that look like they should be upgraded:
Fetched 0 B in 0s (0 B/s)
blacklist: []
InstCount=0 DelCount=0 BrokenCout=0
No packages found that can be upgraded unattended