Ubuntu's Software center doesn't even starts.

[Yemolai]

I try to install Skype's Deb package into my Ubuntu distro and cannot open the software-center, it just do not works, open, install... When I try to open it twice a tiny windows appears blank, with the usual menus (they do not do anything) but the window title is software-center and the windows is blank.

Trying to run it from gnome-terminal, I've got this:

gabriel@gabriel-HGL31I:~$ killall software-center
gabriel@gabriel-HGL31I:~$ software-center
2012-10-20 20:54:48,120 - softwarecenter.ui.gtk3.app - INFO - setting up proxy 'None'
2012-10-20 20:54:48,139 - softwarecenter.db.database - INFO - open() database: path=None use_axi=True use_agent=True
2012-10-20 20:55:29,569 - softwarecenter.db.pkginfo_impl.aptcache - INFO - aptcache.open()
2012-10-20 20:56:48,408 - softwarecenter.ui.gtk3.app - INFO - show_available_packages: search_text is '', app is [Application: appname= pkgname=skype-ubuntu].
2012-10-20 20:57:05,045 - softwarecenter.ui.gtk3.app - INFO - show_available_packages: search_text is '', app is [Application: appname= pkgname=skype-ubuntu].
^C
Traceback (most recent call last):
  File "/usr/bin/software-center", line 130, in <module>
    app = SoftwareCenterAppGtk3(options, args)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/app.py", line 337, in __init__
    self.icons)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/session/appmanager.py", line 66, in __init__
    self.oauth_token = helper.find_oauth_token_sync()
  File "/usr/share/software-center/softwarecenter/backend/ubuntusso.py", line 140, in find_oauth_token_sync
    self.loop.run()
KeyboardInterrupt

The ^C interruption really was me, after half hour the software-center doesn't show up, so I killed the procees with Ctrl+C.

Some useful info:

Yesterday I updated my 12.04 to 12.10 with some strange things happen during the upgrading process. (Like my compiz and unity closing without explanation and the dconf stops working correctly)

Description: Ubuntu 12.10
Release: 12.10

software-center:
  Instalado: 5.4.1.2
  Candidato: 5.4.1.2
  Tabela de versão:
 *** 5.4.1.2 0
        500 http://br.archive.ubuntu.com/ubuntu/ quantal/main i386 Packages
        100 /var/lib/dpkg/status

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Aleksandr Panzin (jalexoid)]

Same issue. Seems that the OAuth token isn't getting returned.