update-manager icon in dash panel do not responding always

[Sasa Paporovic]

Sometimes the update-manager icon in the dash panel is not responding, neither to left mouse click nor to right mouse click options like "quit".

The dash panel arrow looks in this cases like the program would run on a other quart in unity(desktop switcher ability), but that is not the case.

I will attach a screenshot that illustrate what is ment with the dash arrow I have ment above.

So, update manger in fact frozes and is not responding to any user action.

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Steps to reproduce(sometimes):

1.Call a terminal and run

sudo apt-get update

2.After updating the packages lists see the update-manager icon come up in the dash panel with a number which illustrate the available upgrades.
3.In some cases the icon is not responding to any user action(left mouse click; right mouse click options). For details see above.

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: update-manager 1:0.174.3
ProcVersionSignature: Ubuntu 3.7.0-5.13-generic 3.7.0-rc8
Uname: Linux 3.7.0-5-generic x86_64
ApportVersion: 2.6.3-0ubuntu4
Architecture: amd64
Date: Sun Dec 9 11:32:09 2012
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'1355046989'
 b'com.ubuntu.update-manager' b'window-height' b'744'
 b'com.ubuntu.update-manager' b'window-width' b'1301'
InstallationDate: Installed on 2012-07-22 (139 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64 (20120722)
InterpreterPath: /usr/bin/python3.3
MarkForUpload: True
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, no username)
 XDG_RUNTIME_DIR=<set>
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: update-manager
UpgradeStatus: Upgraded to raring on 2012-11-15 (23 days ago)