Description of problem:

I tried to use 'package-cleanup --oldkernels' when I actually
had old kernels installed.  These were FC5 kernels which got stuck
due to a bug 245691.  The result was the following traceback:

/usr/bin/package-cleanup:312: DeprecationWarning: returnHeaderByTuple() will go
away in a future version of Yum.

  hdr = my.rpmdb.returnHeaderByTuple(kernel)[0]
Traceback (most recent call last):
  File "/usr/bin/package-cleanup", line 402, in <module>
    main()
  File "/usr/bin/package-cleanup", line 371, in main
    removeKernels(my, opts.kernelcount, opts.confirmed, opts.keepdevel)
  File "/usr/bin/package-cleanup", line 317, in removeKernels
    my.populateTs()
  File "/usr/lib/python2.5/site-packages/yum/depsolve.py", line 221, in populateTs
    self.ts.addErase(txmbr.po.idx)
  File "/usr/lib/python2.5/site-packages/yum/packages.py", line 707, in __getattr__
    return self.hdr[thing]
KeyError: 'unknown header tag'

This is only a minor hiccup as cleaning up old kernels is easy in
any case, but ...  Once these kernels were gone the same command
just returned with "No kernel related packages to remove".  Not
that big surprise.

Version-Release number of selected component (if applicable):
yum-utils-1.1.5-1.fc7