我的Fedora为什么不能更新？

dury

RT.提示：
Component: pirut
Summary: TB4c8309c5 fastestmirror.py:97:postreposetup_hook:IndexError: list index out of range

Traceback (most recent call last):
  File "/usr/sbin/pup", line 614, in <module>
    main()
  File "/usr/sbin/pup", line 610, in main
    pup.run()
  File "/usr/sbin/pup", line 449, in run
    self.doRefresh()
  File "/usr/sbin/pup", line 267, in doRefresh
    pbar = self.doRefreshRepos(destroy=False)
  File "/usr/lib/python2.5/site-packages/pirut/__init__.py", line 331, in doRefreshRepos
    self.reposSetup(pbar, thisrepo)
  File "/usr/lib/python2.5/site-packages/pirut/__init__.py", line 296, in reposSetup
    self.doTsSetup()
  File "/usr/lib/python2.5/site-packages/yum/depsolve.py", line 63, in doTsSetup
    return self._getTs()
  File "/usr/lib/python2.5/site-packages/yum/depsolve.py", line 77, in _getTs
    self._tsInfo.setDatabases(self.rpmdb, self.pkgSack)
  File "/usr/lib/python2.5/site-packages/yum/__init__.py", line 526, in <lambda>
    pkgSack = property(fget=lambda self: self._getSacks(),
  File "/usr/lib/python2.5/site-packages/yum/__init__.py", line 381, in _getSacks
    self.repos.populateSack(which=repos)
  File "/usr/lib/python2.5/site-packages/yum/repos.py", line 214, in populateSack
    self.doSetup()
  File "/usr/lib/python2.5/site-packages/yum/repos.py", line 66, in doSetup
    self.ayum.plugins.run('postreposetup')
  File "/usr/lib/python2.5/site-packages/yum/plugins.py", line 169, in run
    func(conduitcls(self, self.base, conf, **kwargs))
  File "/usr/lib/yum-plugins/fastestmirror.py", line 97, in postreposetup_hook
    conduit.info(2, " * %s: %s" % (str(repo), host(repo.urls[0])))
IndexError: list index out of range

Local variables in innermost frame:
repo: InstallMedia
conduit: <yum.plugins.PostRepoSetupPluginConduit instance at 0x12a7b90>
repos: ['development', 'updates-debuginfo', 'fedora', 'development-debuginfo', 'updates-source', 'InstallMedia', 'updates-testing-debuginfo', 'updates-testing', 'updates', 'updates-testing-source', 'development-source', 'fedora-source', 'fedora-debuginfo']
repomirrors: {'InstallMedia': [], 'fedora': ['http://ftp.yz.yamagata-u.ac.jp/pub/linux/fedora/linux/releases/8/Everything/x86_64/os', 'http://linux.ntcu.net/ftp/dists/fedora/releases/8/Everything/x86_64/os', 'http://fedora.candishosting.com.cn/pub/fedora/linux/releases/8/Everything/x86_64/os', 'ftp://ftp.sfc.wide.ad.jp/pub/Linux/Fedora/releases/8/Everything/x86_64/os', 'http://ftp.jaist.ac.jp/pub/Linux/Fedora/releases/8/Everything/x86_64/os', 'http://ftp.rhd.ru/pub/fedora/linux/releases/8/Everything/x86_64/os', 'http://ftp.ncnu.edu.tw/Linux/Fedora/linux/releases/8/Everything/x86_64/os', 'http://allotter.yandex.net/fedora/linux/releases/8/Everything/x86_64/os', 'http://ftp.chg.ru/pub/Linux/fedora/linux/releases/8/Everything/x86_64/os', 'http://mirror.wbut.ac.in/pub/fedora/linux/releases/8/Everything/x86_64/os', 'http://opensource.nchc.org.tw/fedora/linux/releases/8/Everything/x86_64/os']}