Description of problem:
yum throws fatal exception in startup, even for --help argument

Version-Release number of selected component (if applicable):
yum-3.2.29-16.el6.noarch

How reproducible:
# yum 

OR

launch Software Update tool

Steps to Reproduce:
1.start # yum
2.OR launch Software Update tool
3.
  
Actual results:
for CLI:
[root@pholasek-pc pholasek]# yum
Loaded plugins: auto-update-debuginfo, product-id, refresh-packagekit, rhnplugin, subscription-manager
Updating Red Hat repositories.
Repository beaker is listed more than once in the configuration
Repository beaker-stage is listed more than once in the configuration
Options Error: need more than 1 value to unpack
[root@pholasek-pc pholasek]# echo $?
1

for GUI:
An Internal System Error has occured and following text within:
Error Type: <type 'exceptions.ValueError'>
Error Value: need more than 1 value to unpack
  File : /usr/share/PackageKit/helpers/yum/yumBackend.py, line 3270, in <module>
    main()
  File : /usr/share/PackageKit/helpers/yum/yumBackend.py, line 3266, in main
    backend = PackageKitYumBackend('', lock=True)
  File : /usr/share/PackageKit/helpers/yum/yumBackend.py, line 238, in __init__
    self.doLock()
  File : /usr/share/PackageKit/helpers/yum/yumBackend.py, line 321, in doLock
    self.yumbase.doLock(YUM_PID_FILE)
  File : /usr/lib/python2.6/site-packages/yum/__init__.py, line 1715, in doLock
    if self.conf.uid != 0:
  File : /usr/lib/python2.6/site-packages/yum/__init__.py, line 886, in <lambda>
    conf = property(fget=lambda self: self._getConfig(),
  File : /usr/lib/python2.6/site-packages/yum/__init__.py, line 358, in _getConfig
    self.plugins.run('init')
  File : /usr/lib/python2.6/site-packages/yum/plugins.py, line 184, in run
    func(conduitcls(self, self.base, conf, **kwargs))
  File : /usr/share/yum-plugins/rhnplugin.py, line 66, in init_hook
    for (repoid, reponame) in repolist:

Expected results:


Additional info: