Failed to initialize error banner

[JD]

I am getting these error banner pop-ups at random:

Failed to initialize
    Failed to initialize packaging backend.
    This may occur if other packaging tools are being used simultaneously.

    More details
Traceback (most recent call last):
   File "/usr/share/PackageKit/helpers/yum/yumBackend.py", line 2828, in 
__init__
     self.repos.confirm_func = self._repo_gpg_confirm
   File "/usr/lib/python2.6/site-packages/yum/__init__.py", line 646, in 
<lambda>
     repos = property(fget=lambda self: self._getRepos(),
   File "/usr/lib/python2.6/site-packages/yum/__init__.py", line 451, in 
_getRepos
     self.conf # touch the config class first
   File "/usr/lib/python2.6/site-packages/yum/__init__.py", line 652, in 
<lambda>
     conf = property(fget=lambda self: self._getConfig(),
   File "/usr/lib/python2.6/site-packages/yum/__init__.py", line 239, in 
_getConfig
     self._conf = config.readMainConfig(startupconf)
   File "/usr/lib/python2.6/site-packages/yum/config.py", line 794, in 
readMainConfig
     yumvars['releasever'] = _getsysver(startupconf.installroot, 
startupconf.distroverpkg)
   File "/usr/lib/python2.6/site-packages/yum/config.py", line 867, in 
_getsysver
     idx = ts.dbMatch('provides', distroverpkg)
TypeError: rpmdb open failed

------------------------------------------------------------

The only process I have running for yum is:
$ ps -wwef | grep yum
root      2489     1  0 10:23 pts/1    00:00:00 /usr/bin/python -tt 
/usr/sbin/yum-updatesd

Problem is I do not know if the yum-updatesd process is popping
up this banner or some other process. Is there some other process
besides yum-updatesd tha would pop up this banner.
I do not have any any other process(es) doing anything with
rpm or yum.

Thanx for your help.

JD
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