I recall seeing this on mailing lists, but I didn't see a bug for it.  So here
it is :).

At the end of install, anaconda dumps out this exception:

anaconda 11.4.0.61 exception report
Traceback (most recent call first):
  File "/usr/lib/anaconda/iutil.py", line 62, in execWithRedirect
    stdout.write("Running... %s\n" %([command] + argv,))
  File "/usr/lib/anaconda/instdata.py", line 177, in write
    root = self.anaconda.rootPath)
  File "/usr/lib/anaconda/backend.py", line 222, in writeConfiguration
    anaconda.id.write()
  File "/usr/lib/anaconda/dispatch.py", line 208, in moveStep
    rc = stepFunc(self.anaconda)
  File "/usr/lib/anaconda/dispatch.py", line 131, in gotoNext
    self.moveStep()
  File "/usr/lib/anaconda/text.py", line 702, in run
    anaconda.dispatch.gotoNext()
  File "/usr/bin/anaconda", line 1049, in <module>
    anaconda.intf.run(anaconda)
AttributeError: 'NoneType' object has no attribute 'write'

The system minimally boots - i.e. grub is installed.  There is no grub.conf and
therefore no menu.  Manually inputting required grub info gets me to a point
where it complains about permission denied attempting to open /etc/fstab, and I
cannot login.