Центос не обновляется

Надо было сделать:

unset LD_LIBRARY_PATH

Пишет:

[root@vm-ora7 yum.repos.d]# yum update

Plugin "refresh-packagekit" can't be imported

Loaded plugins: fastestmirror, priorities, security

Determining fastest mirrors

 * base: centos.tt.co.kr

 * updates: centos.tt.co.kr

base                                                                                                                                   | 3.7 kB     00:00

Traceback (most recent call last):

  File "/usr/bin/yum", line 29, in <module>

    yummain.user_main(sys.argv[1:], exit_code=True)

  File "/usr/share/yum-cli/yummain.py", line 276, in user_main

    errcode = main(args)

  File "/usr/share/yum-cli/yummain.py", line 129, in main

    result, resultmsgs = base.doCommands()

  File "/usr/share/yum-cli/cli.py", line 434, in doCommands

    self._getTs(needTsRemove)

  File "/usr/lib/python2.6/site-packages/yum/depsolve.py", line 99, in _getTs

    self._getTsInfo(remove_only)

  File "/usr/lib/python2.6/site-packages/yum/depsolve.py", line 110, in _getTsInfo

    pkgSack = self.pkgSack

  File "/usr/lib/python2.6/site-packages/yum/__init__.py", line 883, in <lambda>

    pkgSack = property(fget=lambda self: self._getSacks(),

  File "/usr/lib/python2.6/site-packages/yum/__init__.py", line 668, in _getSacks

    self.repos.populateSack(which=repos)

  File "/usr/lib/python2.6/site-packages/yum/repos.py", line 294, in populateSack

    sack.populate(repo, mdtype, callback, cacheonly)

  File "/usr/lib/python2.6/site-packages/yum/yumRepo.py", line 164, in populate

    if self._check_db_version(repo, mydbtype):

  File "/usr/lib/python2.6/site-packages/yum/yumRepo.py", line 222, in _check_db_version

    return repo._check_db_version(mdtype)

  File "/usr/lib/python2.6/site-packages/yum/yumRepo.py", line 1263, in _check_db_version

    repoXML = self.repoXML

  File "/usr/lib/python2.6/site-packages/yum/yumRepo.py", line 1462, in <lambda>

    repoXML = property(fget=lambda self: self._getRepoXML(),

  File "/usr/lib/python2.6/site-packages/yum/yumRepo.py", line 1454, in _getRepoXML

    self._loadRepoXML(text=self)

  File "/usr/lib/python2.6/site-packages/yum/yumRepo.py", line 1444, in _loadRepoXML

    return self._groupLoadRepoXML(text, self._mdpolicy2mdtypes())

  File "/usr/lib/python2.6/site-packages/yum/yumRepo.py", line 1419, in _groupLoadRepoXML

    if self._commonLoadRepoXML(text):

  File "/usr/lib/python2.6/site-packages/yum/yumRepo.py", line 1237, in _commonLoadRepoXML

    result = self._getFileRepoXML(local, text)

  File "/usr/lib/python2.6/site-packages/yum/yumRepo.py", line 1015, in _getFileRepoXML

    size=102400) # setting max size as 100K

  File "/usr/lib/python2.6/site-packages/yum/yumRepo.py", line 837, in _getFile

    size=size

  File "/usr/lib/python2.6/site-packages/urlgrabber/mirror.py", line 408, in urlgrab

    return self._mirror_try(func, url, kw)

  File "/usr/lib/python2.6/site-packages/urlgrabber/mirror.py", line 394, in _mirror_try

    return func_ref( *(fullurl,), **kwargs )

  File "/usr/lib/python2.6/site-packages/urlgrabber/grabber.py", line 985, in urlgrab

    return self._retry(opts, retryfunc, url, filename)

  File "/usr/lib/python2.6/site-packages/urlgrabber/grabber.py", line 886, in _retry

    r = apply(func, (opts,) + args, {})

  File "/usr/lib/python2.6/site-packages/urlgrabber/grabber.py", line 980, in retryfunc

    apply(cb_func, (obj, )+cb_args, cb_kwargs)

  File "/usr/lib/python2.6/site-packages/yum/yumRepo.py", line 1501, in _checkRepoXML

    repoXML = repoMDObject.RepoMD(self.id, filepath)

  File "/usr/lib/python2.6/site-packages/yum/repoMDObject.py", line 124, in __init__

    self.parse(srcfile)

  File "/usr/lib/python2.6/site-packages/yum/repoMDObject.py", line 140, in parse

    parser = iterparse(infile)

  File "/usr/lib/python2.6/site-packages/yum/misc.py", line 1169, in cElementTree_iterparse

    _cElementTree_import()

  File "/usr/lib/python2.6/site-packages/yum/misc.py", line 1164, in _cElementTree_import

    import cElementTree

ImportError: No module named cElementTree