Not all updates can be installed with update-manager

[Nikolay Morozov]

I have 2 Xubuntu destopts amd64. The problem oocurs on both. Some updates can't be installed with update-manager.
Somethimes i have a notification that updates is availble.
steps to preroduce :
- click the notification and see that 4 updates is avail (screenshot 1)
- click show update and see that no updates (sceenshot 2)
- run apt-get upgrade and update 4 packages

The problem occurs sometimes. Somethims all is ok. Seems that some updates are not installing.

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: update-manager 1:0.186.2
ProcVersionSignature: Ubuntu 3.8.0-31.46-generic 3.8.13.8
Uname: Linux 3.8.0-31-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.9.2-0ubuntu8.3
Architecture: amd64
Date: Wed Oct 9 22:24:50 2013
GsettingsChanges:
 b'com.ubuntu.update-manager' b'first-run' b'false'
 b'com.ubuntu.update-manager' b'launch-time' b'1381343062'
 b'com.ubuntu.update-manager' b'show-details' b'true'
 b'com.ubuntu.update-manager' b'window-height' b'529'
 b'com.ubuntu.update-manager' b'window-width' b'732'
InstallationDate: Installed on 2013-05-05 (156 days ago)
InstallationMedia: Xubuntu 13.04 "Raring Ringtail" - Release amd64 (20130423.1)
MarkForUpload: True
PackageArchitecture: all
SourcePackage: update-manager
UpgradeStatus: No upgrade log present (probably fresh install)