fedora 12自動更新 - Linux

老是出現這個錯誤訊息

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)

有高手可以解答一下嗎？ @@"

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