system crash while yumming and ...

[Frederic Muller]

Hi!

As the title says it all, I am now left with the following error message 
every time I try to yum update on F17:

     sudo yum update
     Loaded plugins: langpacks, presto, refresh-packagekit
     Traceback (most recent call last):
     File "/bin/yum", line 29, in <module>
     yummain.user_main(sys.argv[1:], exit_code=True)
     File "/usr/share/yum-cli/yummain.py", line 321, in user_main
     errcode = main(args)
     File "/usr/share/yum-cli/yummain.py", line 146, in main
     result, resultmsgs = base.doCommands()
     File "/usr/share/yum-cli/cli.py", line 485, in doCommands
     return self.yum_cli_commands[self.basecmd].doCommand(self, 
self.basecmd, self.extcmds)
     File "/usr/share/yum-cli/yumcommands.py", line 405, in doCommand
     return base.updatePkgs(extcmds, update_to=(basecmd == 'update-to'))
     File "/usr/share/yum-cli/cli.py", line 878, in updatePkgs
     self.update()
     File "/usr/lib/python2.7/site-packages/yum/__init__.py", line 4351, 
in update
     updates = self.up.getUpdatesTuples()
     File "/usr/lib/python2.7/site-packages/yum/__init__.py", line 1022, 
in <lambda>
     up = property(fget=lambda self: self._getUpdates(),
     File "/usr/lib/python2.7/site-packages/yum/__init__.py", line 827, 
in _getUpdates
     self._up = rpmUtils.updates.Updates(self.rpmdb.simplePkgList(), 
self.pkgSack.simplePkgList())
     File "/usr/lib/python2.7/site-packages/yum/__init__.py", line 1003, 
in <lambda>
     pkgSack = property(fget=lambda self: self._getSacks(),
     File "/usr/lib/python2.7/site-packages/yum/__init__.py", line 767, 
in _getSacks
     self.repos.populateSack(which=repos)
     File "/usr/lib/python2.7/site-packages/yum/repos.py", line 265, in 
populateSack
     self.doSetup()
     File "/usr/lib/python2.7/site-packages/yum/repos.py", line 92, in 
doSetup
     self.ayum.plugins.run('postreposetup')
     File "/usr/lib/python2.7/site-packages/yum/plugins.py", line 187, 
in run
     func(conduitcls(self, self.base, conf, **kwargs))
     File "/usr/lib/yum-plugins/langpacks.py", line 79, in 
postreposetup_hook
     for event, elem in iterparse(infile):
     File "<string>", line 107, in next
     cElementTree.ParseError: no element found: line 1, column 0

Could someone be kind enough to tell me how to fix this?

Thanks a lot.

Fred