Update notifier shows updates are available, but update manager says no updates.
$ sudo apt-get upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be upgraded:
apt apt-transport-https apt-utils curl libapt-inst1.5 libapt-pkg4.12
libcurl3 libcurl3:i386 libcurl3-gnutls libcurl3-gnutls:i386
libcurl4-gnutls-dev
11 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 4 593 kB of archives.
ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: update-manager 1:0.186.2
ProcVersionSignature: Ubuntu 3.8.0-30.44-generic 3.8.13.6
Uname: Linux 3.8.0-30-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.9.2-0ubuntu8.3
Architecture: amd64
Date: Thu Sep 19 18:45:19 2013
ExecutablePath: /usr/bin/update-manager
GsettingsChanges:
b'com.ubuntu.update-manager' b'first-run' b'false'
b'com.ubuntu.update-manager' b'launch-time' b'1379605114'
b'com.ubuntu.update-manager' b'show-details' b'true'
b'com.ubuntu.update-manager' b'window-height' b'745'
b'com.ubuntu.update-manager' b'window-width' b'694'
InstallationDate: Installed on 2010-12-17 (1006 days ago)
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
InterpreterPath: /usr/bin/python3.3
MarkForUpload: True
PackageArchitecture: all
SourcePackage: update-manager
UpgradeStatus: Upgraded to raring on 2013-05-06 (135 days ago)
Status changed to 'Confirmed' because the bug affects multiple users.