[root@localhost achtung]# yumdownloader --enablerepo=jpackage-nonfree java-1.5.0-sun
Loading "installonlyn" plugin
Traceback (most recent call last):
  File "/usr/bin/yumdownloader", line 190, in <module>
    util = YumDownloader()
  File "/usr/bin/yumdownloader", line 41, in __init__
    self.main()
  File "/usr/bin/yumdownloader", line 49, in main
    opts = self.doUtilConfigSetup()
  File "/usr/share/yum-cli/utils.py", line 69, in doUtilConfigSetup
    (opts, self.cmds) = self._parser.setupYumConfig()
  File "/usr/share/yum-cli/cli.py", line 1143, in setupYumConfig
    self.base.repos.enableRepo(repoexp)
  File "/usr/lib/python2.5/site-packages/yum/repos.py", line 141, in enableRepo
    thisrepo = self.getRepo(repoid)
  File "/usr/lib/python2.5/site-packages/yum/repos.py", line 96, in getRepo
    'Error getting repository data for %s, repository not found' % (repoid)
yum.Errors.RepoError: Error getting repository data for jpackage-nonfree, repository not found