Fedora Users — Fedora 12 update problem

I just installed fedora 12 as an update of a fedore 11 system.

This morning I saw 683 updates proposed for my system.

I clicked on "Install Updates" button and had, some seconds after this message:

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Error Type: <class 'yum.Errors.RepoError'>
Error Value: Error getting repository data for installed, repository not found
File : /usr/share/PackageKit/helpers/yum/yumBackend.py, line 3125, in <module>
    main()
File : /usr/share/PackageKit/helpers/yum/yumBackend.py, line 3122, in main
    backend.dispatcher(sys.argv[1:])
File : /usr/lib/python2.6/site-packages/packagekit/backend.py, line 710, in dispatcher
    self.dispatch_command(args[0], args[1:])
File : /usr/lib/python2.6/site-packages/packagekit/backend.py, line 657, in dispatch_command
    self.update_packages(only_trusted, package_ids)
File : /usr/share/PackageKit/helpers/yum/yumBackend.py, line 1948, in update_packages
    signed = self._is_package_repo_signed(pkg)
File : /usr/share/PackageKit/helpers/yum/yumBackend.py, line 1437, in _is_package_repo_signed
    repo = self.yumbase.repos.getRepo(pkg.repoid)
File : /usr/lib/python2.6/site-packages/yum/repos.py, line 121, in getRepo
    'Error getting repository data for $s, repository not found' $ (repoid)
________________________________________

Any help?

___________________________________________
Cordialement / Best Regards

Taoufik GABSI
Géophysique Spatiale et Planétaire
Institut de Physique du Globe de Paris
4, avenue de Neptune - 94107 SAINT MAUR cedex - FRANCE

gabsi@xxxxxxx

Tel +33 (0)1 45 11 41 49
Fax +33 (0)1 45 11 41 10

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